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Page last updated
Thu 17 July 2025

The Freshwater Mussels (Unionoida) of the World (and other less consequential bivalves)

FM(U)otW(aolcb) is the web version of the MUSSEL Project Database. Follow the links to browse the data or use the custom Google search field. Either way, you win!


Bivalvia | Unionoida | Unionoidea | Unionidae | Ambleminae

tribe AMBLEMINI Rafinesque, 1820: cladomics
     3 genera

Cladomics Summary

number of species = 7 (16 total)
number of subtaxa (rank: genus) = 3
analyzed in 138 cladograms in 90 publications
maximum number of terminals in an analysis = 5 (mean = 1.78, median = 1)
maximum number of subtaxa (genus) = 3 (mean = 1.44, median = 1)

Basic Monophyly

number of cladograms that test basic monophyly (i.e., more than 1 included species) = 55
maximum number of included terminals = 5, (mean = 2.95 median = 2)
maximum number of subtaxa (genus) = 3 (mean = 2.11, median = 2)
proportion of cladograms that support basic monophyly = 0.38

Rigorous Monophyly

number of cladograms that test rigorous monophyly = 45
(Rigorous monophyly refers to cladograms with terminal species representing more than one subtaxon (genus) taxon and at least one rigorous outgroup (family).
maximum number of included terminals = 5 (mean = 3.11, median = 3)
maximum number of subtaxa (genus) = 3 (mean = 2.36, median = 2)
proportion of cladograms that support rigorous monophyly = 0.24


Pairwise Cladogram Clustering

The graphs below depict in two dimensions all pair-wise ingroup distances within the cladome. See the Cladmoics FARQ for more information.


PCoA Ordination


NJ Tree


Inoue et al., 2018 [Publ 3858], fig. 1_3a-c

** Top Monophyly Cladogram **

iTtTbiriSoTroTroSiD
582593997740
  +-------- Reginaia **           
  |                            
  +-------- Amblema **            
  |                            
  |     +-- Quadrulini         
  +-----+                      
  |     +-- Pleurobemini       
--+                            
  |  +----- Popenaiadini       
  |  |                         
  |  |  +-- Dromus             
  |  |  |                      
  |  |  +-- Epioblasma         
  |  |  |                      
  +--+  +-- Glebula            
     |  |                      
     |  +-- Lampsilis_ovata    
     |  |                      
     |  +-- Lampsilis_virescens
     |  |                      
     |  +-- Lemiox             
     +--+                      
        +-- Obliquaria         
        |                      
        +-- Obovaria_olivaria  
        |                      
        +-- Obovaria_unicolor  
        |                      
        +-- Plectomerus **        
        |                      
        +-- Potamilus_alatus   
        |                      
        +-- Potamilus_capax    

Campbell et al., 2005 [Publ 2660], fig. 1

** Top Sister-Group Cladogram **

iTtTbiriSoTroTroSiD
54952397854176
  +-------------- Quadrulini  
  |                           
--+  +----------- Pleurobemini
  |  |                        
  +--+        +-- Plectomerus ** 
     |  +-----+               
     |  |     +-- Reginaia **    
     +--+                     
        |  +----- Lampsilini  
        +--+                  
           |  +-- Popenaiadini
           +--+               
              +-- Amblema **     

Campbell & Lydeard, 2012 [Publ 3308], fig. 4

iTtTbiriSoTroTroSiD
5118337374172
  +----------------- Quadrulini  
  |                              
--+  +-------------- Pleurobemini
  |  |                           
  |  |           +-- Popenaiadini
  +--+  +--------+               
     |  |        +-- Amblema **     
     |  |                        
     +--+  +-------- Plectomerus ** 
        |  |                     
        |  |     +-- Cyrtonaias  
        +--+-----+               
           |     +-- Reginaia **    
           |                     
           |  +----- Lemiox      
           +--+                  
              |  +-- Lampsilis   
              +--+               
                 +-- Obovaria    

Campbell & Lydeard, 2012 [Publ 3308], fig. 2

iTtTbiriSoTroTroSiD
5118337374169
  +-------------------- Quadrulini  
  |                                 
--+  +----------------- Pleurobemini
  |  |                              
  +--+              +-- Reginaia **    
     |  +-----------+               
     |  |           +-- Amblema **     
     +--+                           
        |  +----------- Popenaiadini
        |  |                        
        +--+  +-------- Cyrtonaias  
           |  |                     
           +--+-------- Plectomerus ** 
              |                     
              |  +----- Lemiox      
              +--+                  
                 |  +-- Lampsilis   
                 +--+               
                    +-- Obovaria    

Campbell & Lydeard, 2012 [Publ 3308], fig. 1

iTtTbiriSoTroTroSiD
5119337374171
  +-------------------- Quadrulini  
  |                                 
--+  +----------------- Pleurobemini
  |  |                              
  |  |              +-- Popenaiadini
  +--+  +-----------+               
     |  |           +-- Amblema **     
     |  |                           
     +--+           +-- Cyrtonaias  
        |  +--------+               
        |  |        +-- Reginaia **    
        +--+                        
           |  +-------- Plectomerus ** 
           +--+                     
              |  +----- Lemiox      
              +--+                  
                 |  +-- Lampsilis   
                 +--+               
                    +-- Obovaria    

Inoue et al., 2020 [Publ 4128], fig. 3

iTtTbiriSoTroTroSiD
52426220203180
  +----------------------------------------- Quadrulini             
  |                                                                 
--+  +-------------------------------------- Reginaia **               
  |  |                                                              
  +--+  +----------------------------------- Amblema **                
     |  |                                                           
     +--+                                +-- Popenaias              
        |  +-----------------------------+                          
        |  |                             +-- Psoronaias             
        +--+                                                        
           |  +----------------------------- Cyrtonaias_tampicoensis
           |  |                                                     
           +--+  +-------------------------- Ptychobranchus         
              |  |                                                  
              +--+  +----------------------- Ligumia                
                 |  |                                               
                 +--+  +-------------------- Potamilus              
                    |  |                                            
                    +--+  +----------------- Pachynaias             
                       |  |                                         
                       |  |              +-- Epioblasma             
                       +--+  +-----------+                          
                          |  |           +-- Truncilla              
                          |  |                                      
                          +--+           +-- Ortmanniana            
                             |  +--------+                          
                             |  |        +-- Lampsilis              
                             +--+                                   
                                |  +-------- Cambarunio             
                                +--+                                
                                   |  +----- Sphenonaias_microdon__2
                                   +--+                             
                                      |  +-- Cyrtonaias_explicata   
                                      +--+                          
                                         +-- Sphenonaias_microdon__1

Campbell & Lydeard, 2012 [Publ 3309], fig. 3

iTtTbiriSoTroTroSiD
52119368684172
  +----------------------------------- Quadrulini            
  |                                                          
--+  +-------------------------------- Pleurobemini          
  |  |                                                       
  |  |                             +-- Amblema **               
  +--+  +--------------------------+                         
     |  |                          +-- Reginaia **              
     |  |                                                    
     +--+  +-------------------------- Popenaiadini          
        |  |                                                 
        |  |                       +-- Glebula               
        +--+  +--------------------+                         
           |  |                    +-- Paetulunio            
           |  |                                              
           +--+                    +-- Toxolasma             
              |  +-----------------+                         
              |  |                 +-- Plectomerus **           
              |  |                                           
              +--+  +----------------- Obliquaria            
                 |  |                                        
                 |  |           +----- Potamilus             
                 +--+  +--------+                            
                    |  |        |  +-- Dromus                
                    |  |        +--+                         
                    +--+           +-- Lemiox                
                       |                                     
                       |  +----------- Lampsilis_ovata       
                       |  |                                  
                       +--+  +-------- Lampsilis_virescens   
                          |  |                               
                          +--+     +-- Epioblasma            
                             |  +--+                         
                             |  |  +-- Obovaria_arkansasensis
                             +--+                            
                                |  +-- Obovaria_olivaria     
                                +--+                         
                                   +-- Venustaconcha         

Campbell & Lydeard, 2012 [Publ 3309], fig. 1-2

iTtTbiriSoTroTroSiD
52115368684173
  +-------------- Quadrulini  
  |                           
--+  +----------- Pleurobemini
  |  |                        
  +--+        +-- Plectomerus ** 
     |  +-----+               
     |  |     +-- Reginaia **    
     +--+                     
        |  +----- Lampsilini  
        +--+                  
           |  +-- Popenaiadini
           +--+               
              +-- Amblema **     

Inoue et al., 2020 [Publ 4128], fig. 2

iTtTbiriSoTroTroSiD
52516221213180
  +-------------------------- Quadrulini             
  |                                                  
--+  +----------------------- Reginaia **               
  |  |                                               
  +--+  +-------------------- Amblema **                
     |  |                                            
     |  |                 +-- Popenaias              
     +--+  +--------------+                          
        |  |              +-- Psoronaias             
        |  |                                         
        +--+              +-- Glebula                
           |  +-----------+                          
           |  |           +-- Cyrtonaias_tampicoensis
           |  |                                      
           +--+  +----------- Potamilus              
              |  |                                   
              |  |        +-- Ptychobranchus         
              +--+  +-----+                          
                 |  |     +-- Truncilla              
                 |  |                                
                 |  |  +----- Ortmanniana            
                 +--+  |                             
                    |  +----- Epioblasma             
                    |  |                             
                    |  +----- Lampsilis              
                    |  |                             
                    +--+----- Ligumia                
                       |                             
                       +----- Cambarunio             
                       |                             
                       +----- Pachynaias             
                       |                             
                       |  +-- Cyrtonaias_explicata   
                       +--+                          
                          +-- Sphenonaias            

Campbell et al., 2005 [Publ 2660], fig. 2

iTtTbiriSoTroTroSiD
54942397854173
  +-------------------------- Quadrulini                    
  |                                                         
  |  +----------------------- Pleurobemini                  
--+  |                                                      
  |  |                 +----- Popenaiadini                  
  |  |  +--------------+                                    
  |  |  |              |  +-- Amblema **                       
  +--+  |              +--+                                 
     |  |                 +-- Reginaia **                      
     |  |                                                   
     |  |                 +-- Plectomerus **                   
     |  |  +--------------+                                 
     +--+  |              +-- Toxolasma                     
        |  |                                                
        |  |           +----- Obliquaria                    
        |  |  +--------+                                    
        |  |  |        |  +-- Cyrtonaias                    
        |  |  |        +--+                                 
        |  |  |           +-- Glebula                       
        |  |  |                                             
        +--+  |  +----------- Sagittunio                    
           |  |  |                                          
           |  |  +----------- Leaunio                       
           |  |  |                                          
           |  |  +----------- Potamilus                     
           |  |  |                                          
           |  |  +----------- Hamiota                       
           |  |  |                                          
           |  |  |        +-- Ellipsaria                    
           +--+  +--------+                                 
              |  |        +-- Truncilla                     
              |  |                                          
              |  |     +----- Lampsilis_teres               
              |  +-----+                                    
              |  |     |  +-- Ortmanniana_ligamentina       
              |  |     +--+                                 
              |  |        +-- Lampsilis_siliquoidea         
              |  |                                          
              |  |     +----- Villosa                       
              |  +-----+                                    
              |  |     |  +-- Ligumia                       
              |  |     +--+                                 
              |  |        +-- Cambarunio                    
              |  |                                          
              +--+  +-------- Ortmanniana_pectorosa         
                 +--+                                       
                 |  |  +----- Lampsilis_ornata              
                 |  +--+                                    
                 |     |  +-- Lampsilis_cardium             
                 |     +--+                                 
                 |        +-- Lampsilis_ovata               
                 |                                          
                 |  +-------- Obovaria_olivaria             
                 |  |                                       
                 |  +-------- Venustaconcha_ellipsiformis__2
                 +--+                                       
                 |  +-------- Epioblasma                    
                 |  |                                       
                 |  |  +----- Obovaria_unicolor             
                 |  +--+                                    
                 |     |  +-- Obovaria_arkansasensis        
                 |     +--+                                 
                 |        +-- Obovaria_subrotunda           
                 |                                          
                 |        +-- Ptychobranchus                
                 |  +-----+                                 
                 |  |     +-- Venustaconcha_ellipsiformis__1
                 |  |                                       
                 +--+  +----- Medionidus_conradicus         
                    |  |                                    
                    |  |  +-- Lemiox                        
                    +--+--+                                 
                       |  +-- Medionidus_acutissimus        
                       |                                    
                       |  +-- Dromus                        
                       +--+                                 
                          +-- Cyprogenia                    

Campbell & Lydeard, 2012 [Publ 3308], fig. 3

iTtTbiriSoTroTroSiD
53635338384160
  +-------------------------------- Quadrulini          
  |                                                     
  |                 +-------------- Elliptoideus        
  |  +--------------+                                   
  |  |              |  +----------- Plectomerus **         
--+  |              +--+                                
  |  |                 |  +-------- Obovaria_unicolor   
  |  |                 +--+                             
  |  |                    |  +----- Obovaria_olivaria   
  |  |                    +--+                          
  |  |                       |  +-- Lampsilis           
  +--+                       +--+                       
     |                          +-- Lemiox              
     |                                                  
     |                    +-------- Cyrtonaias          
     |  +-----------------+                             
     |  |                 |  +----- Reginaia **            
     |  |                 +--+                          
     |  |                    |  +-- Popenaiadini        
     +--+                    +--+                       
        |                       +-- Amblema **             
        |                                               
        |  +----------------------- Elliptio            
        |  |                                            
        +--+  +-------------------- Eurynia             
           |  |                                         
           |  |  +----------------- Parvaspina          
           +--+  |                                      
              |  |              +-- Hemistena           
              |  +--------------+                       
              +--+              +-- Plethobasus         
                 |                                      
                 |  +-------------- Pleuronaia          
                 |  |                                   
                 |  |           +-- Pleurobema_cordatum 
                 +--+  +--------+                       
                    |  |        +-- Fusconaia           
                    |  |                                
                    +--+        +-- Pleurobema_stabile  
                       |  +-----+                       
                       |  |     +-- Pleurobema_sintoxia 
                       +--+                             
                          |  +----- Pleurobema_decisum  
                          +--+                          
                             |  +-- Pleurobema_clava    
                             +--+                       
                                +-- Pleurobema_pyriforme

Pfeiffer et al., 2016 [Publ 3660], fig. 2

iTtTbiriSoTroTroSiD
442234333172
                             +-- Amblema **              
  +--------------------------+                        
  |                          +-- Reginaia **             
--+                                                   
  |  +-------------------------- Lampsilini           
  |  |                                                
  +--+  +----------------------- Elliptoideus         
     |  |                                             
     +--+  +-------------------- Quadrulini           
        |  |                                          
        +--+  +----------------- Elliptio             
           |  |                                       
           |  |  +-------------- Parvaspina           
           +--+  |                                    
              |  +-------------- Plethobasus          
              |  |                                    
              |  |           +-- Hemistena            
              +--+-----------+                        
                 |           +-- Eurynia              
                 |                                    
                 |  +----------- Fusconaia            
                 |  |                                 
                 |  |     +----- Pleurobema_riddellii 
                 +--+  +--+                           
                    |  |  |  +-- Pleurobema_sintoxia  
                    |  |  +--+                        
                    +--+     +-- Pleurobema_cordatum  
                       |                              
                       |  +----- Pleuronaia           
                       |  |                           
                       +--+  +-- Pleurobema_pyriforme 
                          |  |                        
                          +--+-- Pleurobema_strodeanum
                             |                        
                             +-- Pleurobema_clava     

Inoue et al., 2020 [Publ 3941], fig. 3

iTtTbiriSoTroTroSiD
442238373170
  +----------- Quadrulini  
--+                        
  |  +-------- Pleurobemini
  +--+                     
     |  +----- Lampsilini  
     +--+                  
        |  +-- Amblema **     
        +--+               
           +-- Reginaia **    

Pfeiffer et al., 2019 [Publ 3866], fig. 1

iTtTbiriSoTroTroSiD
442231304172
  +----------------------------------- Quadrulini             
  |                                                           
--+  +-------------------------------- Pleurobemini           
  |  |                                                        
  |  |                             +-- Amblema **                
  +--+  +--------------------------+                          
     |  |                          +-- Reginaia **               
     |  |                                                     
     +--+                          +-- Popenaias              
        |  +-----------------------+                          
        |  |                       +-- Psoronaias             
        |  |                                                  
        +--+                       +-- Cyrtonaias_tampicoensis
           |  +--------------------+                          
           |  |                    +-- Glebula                
           |  |                                               
           +--+  +-------------------- Potamilus              
              |  |                                            
              |  |                 +-- Truncilla              
              +--+  +--------------+                          
                 |  |              +-- Ptychobranchus         
                 |  |                                         
                 +--+  +-------------- Pachynaias             
                    |  |                                      
                    |  |           +-- Cyrtonaias_explicata   
                    +--+  +--------+                          
                       |  |        +-- Sphenonaias            
                       |  |                                   
                       +--+        +-- Lampsilis              
                          |  +-----+                          
                          |  |     +-- Ortmanniana            
                          +--+                                
                             |  +----- Cambarunio             
                             +--+                             
                                |  +-- Epioblasma             
                                +--+                          
                                   +-- Ligumia                

Inoue et al., 2020 [Publ 3941], fig. 4

iTtTbiriSoTroTroSiD
43838237363178
  +----------- Quadrulini  
--+                        
  |  +-------- Reginaia **    
  +--+                     
     |  +----- Pleurobemini
     +--+                  
        |  +-- Amblema **     
        +--+               
           +-- Lampsilini  

Smith et al., 2020 [Publ 4129], fig. 1

iTtTbiriSoTroTroSiD
331325254172
  +-------------- Quadrulini  
  |                           
--+  +----------- Pleurobemini
  |  |                        
  +--+        +-- Popenaiadini
     |  +-----+               
     |  |     +-- Lampsilini  
     +--+                     
        |  +----- Reginaia **    
        +--+                  
           |  +-- Amblema **     
           +--+               
              +-- Plectomerus ** 

Pfeiffer et al., 2019 [Publ 3937], fig. 4-5

iTtTbiriSoTroTroSiD
331354124172
  +-------------- Quadrulini  
  |                           
--+  +----------- Pleurobemini
  |  |                        
  +--+        +-- Popenaiadini
     |  +-----+               
     |  |     +-- Lampsilini  
     +--+                     
        |  +----- Reginaia **    
        +--+                  
           |  +-- Plectomerus ** 
           +--+               
              +-- Amblema **     

Smith et al., 2020 [Publ 4129], fig. 2-3

iTtTbiriSoTroTroSiD
331325254172
  +-------------- Quadrulini  
  |                           
--+  +----------- Pleurobemini
  |  |                        
  +--+        +-- Popenaiadini
     |  +-----+               
     |  |     +-- Lampsilini  
     +--+                     
        |  +----- Reginaia **    
        +--+                  
           |  +-- Amblema **     
           +--+               
              +-- Plectomerus ** 

Smith et al., 2019 [Publ 3951], fig. 2

iTtTbiriSoTroTroSiD
34039338383180
  +-------------------------------------- Quadrulini             
  |                                                              
  |                                   +-- Amblema **                
--+  +--------------------------------+                          
  |  |                                +-- Reginaia **               
  |  |                                                           
  +--+  +-------------------------------- Plectomerus **            
     |  |                                                        
     |  |  +----------------------------- Toxolasma              
     +--+  |                                                     
        |  |                       +----- Popenaiadini           
        |  |  +--------------------+                             
        +--+  |                    |  +-- Glebula                
           |  |                    +--+                          
           |  |                       +-- Cyrtonaias             
           |  |                                                  
           +--+  +----------------------- Obliquaria             
              |  |                                               
              |  |                    +-- Medionidus             
              |  |                 +--+                          
              |  |                 |  +-- Lemiox                 
              +--+  +--------------+                             
                 |  |              |  +-- Cyprogenia             
                 |  |              +--+                          
                 |  |                 +-- Ptychobranchus         
                 |  |                                            
                 +--+           +-------- Potamilus              
                    |  +--------+                                
                    |  |        |  +----- Atlanticoncha          
                    |  |        +--+                             
                    |  |           |  +-- Ellipsaria             
                    |  |           +--+                          
                    +--+              +-- Truncilla              
                       |                                         
                       |              +-- Hamiota                
                       |  +-----------+                          
                       |  |           +-- Villosa                
                       |  |                                      
                       +--+  +----------- Ligumia                
                          |  |                                   
                          |  |     +----- Venustaconcha          
                          +--+  +--+                             
                             |  |  |  +-- Obovaria               
                             |  |  +--+                          
                             +--+     +-- Epioblasma             
                                |                                
                                |  +----- Ortmanniana_pectorosa  
                                +--+                             
                                   |  +-- Ortmanniana_ligamentina
                                   +--+                          
                                      +-- Lampsilis              

Inoue et al., 2013 [Publ 3528], fig. 3

iTtTbiriSoTroTroSiD
331214123171
              +-- Pleurobemini
  +-----------+               
  |           +-- Quadrulini  
  |                           
--+        +----- Paetulunio  
  |  +-----+                  
  |  |     |  +-- Amblema **     
  |  |     +--+               
  +--+        +-- Reginaia **    
     |                        
     |  +-------- Lampsilis   
     |  |                     
     +--+  +----- Leaunio     
        |  |                  
        +--+----- Obovaria    
           |                  
           |  +-- Villosa     
           +--+               
              +-- Cambarunio  

Pfeiffer et al., 2019 [Publ 3937], fig. 6

iTtTbiriSoTroTroSiD
331354124172
  +-------------- Quadrulini  
  |                           
--+           +-- Popenaiadini
  |  +--------+               
  |  |        +-- Lampsilini  
  +--+                        
     |  +-------- Pleurobemini
     +--+                     
        |  +----- Reginaia **    
        +--+                  
           |  +-- Plectomerus ** 
           +--+               
              +-- Amblema **     

Patterson et al., 2021 [Publ 4222], fig. 3

iTtTbiriSoTroTroSiD
3311111173
  +-- Lampsilini
--+             
  +-- Amblema **   

Serb et al., 2003 [Publ 2659], fig. 3

iTtTbiriSoTroTroSiD
32220326263179
  +-------------------------- Lampsilis   
  |                                       
--+  +----------------------- Potamilus   
  |  |                                    
  |  |                 +----- Medionidus  
  +--+  +--------------+                  
     |  |              |  +-- Dromus      
     |  |              +--+               
     +--+                 +-- Cyprogenia  
        |                                 
        |  +----------------- Obliquaria  
        |  |                              
        +--+  +-------------- Amblema **     
           |  |                           
           |  |        +----- Reginaia **    
           +--+  +-----+                  
              |  |     |  +-- Elliptoideus
              |  |     +--+               
              +--+        +-- Plectomerus ** 
                 |                        
                 |  +-------- Quadrulini  
                 +--+                     
                    |  +----- Hemistena   
                    +--+                  
                       |  +-- Elliptio    
                       +--+               
                          +-- Fusconaia   

Mulvey et al., 1997 [Publ 3390], fig. 1_3

iTtTbiriSoTroTroSiD
3311211173
  +-- Quadrulini
--+             
  +-- Amblema **   

Serb et al., 2003 [Publ 2659], fig. 2

iTtTbiriSoTroTroSiD
32718326263176
  +----------- Lampsilis   
  |                        
  |  +-------- Obliquaria  
  |  |                     
  |  +-------- Amblema **     
  |  |                     
--+  +-------- Reginaia **    
  |  |                     
  |  +-------- Potamilus   
  |  |                     
  |  +-------- Quadrulini  
  |  |                     
  +--+     +-- Elliptoideus
     +-----+               
     |     +-- Plectomerus ** 
     |                     
     |  +----- Medionidus  
     +--+                  
     |  |  +-- Dromus      
     |  +--+               
     |     +-- Cyprogenia  
     |                     
     |  +----- Hemistena   
     +--+                  
        |  +-- Elliptio    
        +--+               
           +-- Fusconaia   

Burlakova et al., 2012 [Publ 3486], fig. 1

iTtTbiriSoTroTroSiD
34142238383165
  +----------- Amblema **     
  |                        
--+        +-- Lampsilis   
  |  +-----+               
  |  |     +-- Plectomerus ** 
  +--+                     
     |  +----- Popenaiadini
     +--+                  
        |  +-- Cyrtonaias  
        +--+               
           +-- Pleurobemini

Lopes-Lima et al., 2019 [Publ 3901], fig. 2

iTtTbiriSoTroTroSiD
220126223--
  +-------- Amblema **     
--+                     
  |  +----- Lampsilini  
  +--+                  
     |  +-- Pleurobemini
     +--+               
        +-- Quadrulini  

Rosenberg et al., 1997 [Publ 2720], fig. 2B

iTtTbiriSoTroTroSiD
217022093177
  +-- Gonideini          
  |                      
  +-- Pyganodon_grandis  
  |                      
  +-- Utterbackia        
  |                      
  +-- Pyganodon_cataracta
  |                      
  +-- Lampsilis_straminea
  |                      
  +-- Lampsilis_teres    
  |                      
  +-- Megalonaias        
  |                      
  +-- Obliquaria         
  |                      
--+-- Theliderma         
  |                      
  +-- Quadrula           
  |                      
  +-- Uniomerus          
  |                      
  +-- Amblema **            
  |                      
  +-- Elliptio           
  |                      
  +-- Fusconaia          
  |                      
  +-- Plectomerus **        
  |                      
  +-- Aculamprotula      
  |                      
  +-- Unio               

Chapman et al., 2008 [Publ 2744], fig. 2

iTtTbiriSoTroTroSiD
2160219184180
  +-------------- Quadrulini  
--+                           
  |  +----------- Pleurobemini
  +--+                        
     |  +-------- Amblema **     
     +--+                     
        |  +----- Plectomerus ** 
        +--+                  
           |  +-- Popenaiadini
           +--+               
              +-- Lampsilini  

Curole & Kocher, 2005 [Publ 2682], fig. 1-M

iTtTbiriSoTroTroSiD
27021072177
  +-------- Quadrulini 
--+                    
  |  +----- Plectomerus **
  +--+                 
     |  +-- Amblema **    
     +--+              
        +-- Lampsilini 

Huang et al., 2019 [Publ 3843], fig. S4

iTtTbiriSoTroTroSiD
22102197233180
  +-------- Amblema **           
  |                           
  +-------- Toxolasma         
  |                           
  +-------- Pleurobemini      
  |                           
  |     +-- Obliquaria        
  +-----+                     
  |     +-- Plectomerus **       
--+                           
  |  +----- Ellipsaria        
  |  |                        
  |  +----- Potamilus_leptodon
  |  |                        
  |  +----- Medionidus        
  |  |                        
  |  +----- Potamilus_alatus  
  |  |                        
  |  +----- Ptychobranchus    
  +--+                        
     +----- Truncilla         
     |                        
     +----- Venustaconcha     
     |                        
     +----- Cambarunio        
     |                        
     +----- Leaunio           
     |                        
     |  +-- Ortmanniana       
     +--+                     
        +-- Lampsilis         

Huang et al., 2019 [Publ 3843], fig. 2

iTtTbiriSoTroTroSiD
21602197233183
  +-------------------------- Quadrulini        
  |                                             
--+  +----------------------- Pleurobemini      
  |  |                                          
  +--+  +-------------------- Amblema **           
     |  |                                       
     |  |              +----- Toxolasma         
     +--+  +-----------+                        
        |  |           |  +-- Obliquaria        
        |  |           +--+                     
        |  |              +-- Plectomerus **       
        +--+                                    
           |  +-------------- Potamilus_leptodon
           |  |                                 
           |  |  +----------- Potamilus_alatus  
           +--+  |                              
              |  |  +-------- Venustaconcha     
              |  |  |                           
              +--+  +-------- Leaunio           
                 |  |                           
                 |  |     +-- Ellipsaria        
                 |  +-----+                     
                 +--+     +-- Truncilla         
                    |                           
                    |     +-- Medionidus        
                    +-----+                     
                    |     +-- Ptychobranchus    
                    |                           
                    |  +----- Cambarunio        
                    +--+                        
                       |  +-- Ortmanniana       
                       +--+                     
                          +-- Lampsilis         

Perkins et al., 2017 [Publ 3777], fig. 2

iTtTbiriSoTroTroSiD
2360234341168
  +-- Amblema **     
  |               
--+-- Plectomerus ** 
  |               
  +-- Pleurobemini

Boyer et al., 2011 [Publ 2718], fig. 3

iTtTbiriSoTroTroSiD
2290233273179
  +-------- Reginaia **    
  |                     
--+     +-- Pleurobemini
  |  +--+               
  |  |  +-- Quadrulini  
  +--+                  
     |  +-- Amblema **     
     +--+               
        +-- Lampsilini  

Lydeard et al., 1996 [Publ 2656], fig. 3

iTtTbiriSoTroTroSiD
2110225163179
                          +-- Megalonaias         
  +-----------------------+                       
  |                       +-- Quadrulina          
  |                                               
  |                    +----- Elliptoideus        
--+                    |                          
  |  +-----------------+  +-- Eurynia             
  |  |                 |  |                       
  |  |                 +--+-- Pleurobema          
  |  |                    |                       
  +--+                    +-- Uniomerus           
     |                                            
     |  +-------------------- Amblema **             
     |  |                                         
     +--+                 +-- Plectomerus **         
        |  +--------------+                       
        |  |              +-- Obliquaria          
        +--+                                      
           |  +-------------- Potamilus_fragilis  
           |  |                                   
           +--+  +----------- Ptychobranchus      
              |  |                                
              +--+  +-------- Medionidus          
                 |  |                             
                 +--+  +----- Potamilus_purpuratus
                    |  |                          
                    +--+----- Lampsilis           
                       |                          
                       |  +-- Ellipsaria          
                       +--+                       
                          +-- Villosa             

Rosenberg et al., 1997 [Publ 2720], fig. 2A

iTtTbiriSoTroTroSiD
2170220103177
  +-- Gonideini          
  |                      
  +-- Pyganodon_grandis  
  |                      
  +-- Utterbackia        
  |                      
  +-- Pyganodon_cataracta
  |                      
  +-- Lampsilis_straminea
  |                      
  +-- Lampsilis_teres    
  |                      
  +-- Megalonaias        
  |                      
  +-- Obliquaria         
  |                      
--+-- Theliderma         
  |                      
  +-- Quadrula           
  |                      
  +-- Uniomerus          
  |                      
  +-- Amblema **            
  |                      
  +-- Elliptio           
  |                      
  +-- Fusconaia          
  |                      
  +-- Plectomerus **        
  |                      
  +-- Pleurobema         
  |                      
  +-- Unionini           

Freeman et al., 2025 [Publ 4443], fig. 5

iTtTbiriSoTroTroSiD
2202994--
        +-- Popenaiadini
  +-----+               
  |     +-- Lampsilini  
  |                     
--+     +-- Amblema **     
  |  +--+               
  |  |  +-- Plectomerus ** 
  +--+                  
     |  +-- Pleurobemini
     +--+               
        +-- Quadrulini  

Freeman et al., 2025 [Publ 4443], fig. 3

iTtTbiriSoTroTroSiD
220210104--
        +-- Popenaiadini
  +-----+               
  |     +-- Lampsilini  
  |                     
--+     +-- Amblema **     
  |  +--+               
  |  |  +-- Plectomerus ** 
  +--+                  
     |  +-- Pleurobemini
     +--+               
        +-- Quadrulini  

Huang et al., 2019 [Publ 3843], fig. S3

iTtTbiriSoTroTroSiD
21602195233183
  +----------------------------------- Quadrulini        
  |                                                      
--+  +-------------------------------- Pleurobemini      
  |  |                                                   
  +--+  +----------------------------- Amblema **           
     |  |                                                
     +--+  +-------------------------- Toxolasma         
        |  |                                             
        +--+                       +-- Obliquaria        
           |  +--------------------+                     
           |  |                    +-- Plectomerus **       
           +--+                                          
              |  +-------------------- Potamilus_leptodon
              |  |                                       
              +--+  +----------------- Potamilus_alatus  
                 |  |                                    
                 |  |              +-- Medionidus        
                 +--+  +-----------+                     
                    |  |           +-- Ptychobranchus    
                    |  |                                 
                    +--+           +-- Ellipsaria        
                       |  +--------+                     
                       |  |        +-- Truncilla         
                       +--+                              
                          |  +-------- Leaunio           
                          |  |                           
                          +--+     +-- Venustaconcha     
                             |  +--+                     
                             |  |  +-- Cambarunio        
                             +--+                        
                                |  +-- Ortmanniana       
                                +--+                     
                                   +-- Lampsilis         

Lydeard et al., 2000 [Publ 2654], fig. 2c

iTtTbiriSoTroTroSiD
220112103--
  +-- Reginaia **    
--+               
  +-- Pleurobemini

Lydeard et al., 2000 [Publ 2654], fig. 2b

iTtTbiriSoTroTroSiD
220112103--
  +-------- Lampsilini  
--+                     
  |  +----- Reginaia **    
  +--+                  
     |  +-- Quadrulini  
     +--+               
        +-- Pleurobemini

Boyer et al., 2011 [Publ 2718], fig. 4

iTtTbiriSoTroTroSiD
2210236273183
  +-------------------------------- Quadrulina           
  |                                                      
--+  +----------------------------- Megalonaias          
  |  |                                                   
  +--+  +-------------------------- Toxolasma            
     |  |                                                
     +--+  +----------------------- Amblema **              
        |  |                                             
        |  |  +-------------------- Pleurobemini         
        +--+  |                                          
           |  |                 +-- Reginaia **             
           |  +-----------------+                        
           +--+                 +-- Obliquaria           
              |                                          
              |  +----------------- Potamilus            
              |  |                                       
              |  |              +-- Ellipsaria           
              +--+  +-----------+                        
                 |  |           +-- Truncilla            
                 |  |                                    
                 +--+  +----------- Lampsilis_cardium    
                    |  |                                 
                    |  |     +----- Ligumia              
                    |  +-----+                           
                    +--+     |  +-- Obovaria             
                       |     +--+                        
                       |        +-- Epioblasma           
                       |                                 
                       |  +-------- Lampsilis_teres      
                       +--+                              
                          |  +----- Lampsilis_siliquoidea
                          +--+                           
                             |  +-- Ortmanniana          
                             +--+                        
                                +-- Lampsilis_higginsii  

Freeman et al., 2025 [Publ 4443], fig. 4

iTtTbiriSoTroTroSiD
22021094--
        +-- Amblema **     
     +--+               
     |  +-- Plectomerus ** 
  +--+                  
  |  |  +-- Pleurobemini
  |  +--+               
  |     +-- Quadrulini  
--+                     
  |  +----- Obliquaria  
  |  |                  
  |  +----- None        
  +--+                  
     +----- Popenaiadini
     |                  
     |  +-- Glebula     
     +--+               
        +-- Cyrtonaias  

Lydeard et al., 2000 [Publ 2654], fig. 2a

iTtTbiriSoTroTroSiD
220112103--
1

Krebs et al., 2003 [Publ 2691], fig. 3

iTtTbiriSoTroTroSiD
2130231193180
                          +-- Megalonaias          
  +-----------------------+                        
  |                       +-- Quadrulina           
  |                                                
  |              +----------- Elliptoideus         
  |  +-----------+                                 
--+  |           |  +-------- Pleurobema           
  |  |           +--+                              
  |  |              |  +----- Uniomerus            
  |  |              +--+                           
  |  |                 |  +-- Fusconaia            
  +--+                 +--+                        
     |                    +-- Eurynia              
     |                                             
     |  +-------------------- Amblema **              
     |  |                                          
     |  |              +----- Toxolasma            
     |  |  +-----------+                           
     +--+  |           |  +-- Plectomerus **          
        |  |           +--+                        
        |  |              +-- Obliquaria           
        |  |                                       
        +--+           +----- Ptychobranchus       
           |  +--------+                           
           |  |        |  +-- Potamilus_fragilis   
           |  |        +--+                        
           |  |           +-- Medionidus           
           +--+                                    
              |           +-- Villosa              
              |  +--------+                        
              |  |        +-- Ellipsaria           
              +--+                                 
                 |  +-------- Lampsilis_teres      
                 +--+                              
                    |  +----- Lampsilis_siliquoidea
                    +--+                           
                       |  +-- Potamilus_purpuratus 
                       +--+                        
                          +-- Potamilus_alatus     

Chapman et al., 2008 [Publ 2667], fig. 1

iTtTbiriSoTroTroSiD
2160219184180
  +-------------- Quadrulini  
--+                           
  |  +----------- Pleurobemini
  +--+                        
     |  +-------- Amblema **     
     +--+                     
        |  +----- Plectomerus ** 
        +--+                  
           |  +-- Popenaiadini
           +--+               
              +-- Lampsilini  

Lydeard et al., 2000 [Publ 2654], fig. 2d

iTtTbiriSoTroTroSiD
220112103--
  +-------- Reginaia **    
--+                     
  |  +----- Lampsilini  
  +--+                  
     |  +-- Quadrulini  
     +--+               
        +-- Pleurobemini

Curole & Kocher, 2005 [Publ 2682], fig. 1

iTtTbiriSoTroTroSiD
2802972174
  +----------------- Glebula            
  |                                     
--+              +-- Amblema **            
  |  +-----------+                      
  |  |           +-- Quadrulini         
  +--+                                  
     |  +----------- Plectomerus **        
     +--+                               
        |  +-------- Leaunio            
        +--+                            
           |  +----- Lampsilis_straminea
           +--+                         
              |  +-- Lampsilis_teres    
              +--+                      
                 +-- Potamilus          

Porto-Hannes et al., 2021 [Publ 4227], fig. 3

iTtTbiriSoTroTroSiD
220113133--
  +-------- Quadrula_quadrula 
  |                           
--+-------- Quadrula_verrucosa
  |                           
  |  +----- Pleurobemini      
  +--+                        
     |  +-- Amblema **           
     +--+                     
        +-- Lampsilini        

Lopes-Lima et al., 2019 [Publ 3901], fig. 3

iTtTbiriSoTroTroSiD
220127233--
  +----------- Megalonaias 
  |                        
--+        +-- Uniomerus   
  |  +-----+               
  |  |     +-- Quadrulina  
  +--+                     
     |  +----- Pleurobemini
     +--+                  
        |  +-- Lampsilini  
        +--+               
           +-- Amblema **     

Huang et al., 2002 [Publ 2657], fig. 2

iTtTbiriSoTroTroSiD
2100232123179
  +----------- Megalonaias         
  |                                
  |     +----- Elliptoideus        
  |  +--+                          
--+  |  |  +-- Uniomerus           
  |  |  +--+                       
  |  |     +-- Pleurobema          
  |  |                             
  |  |  +----- Potamilus_fragilis  
  +--+  |                          
     |  +----- Medionidus          
     |  |                          
     |  +----- Amblema **             
     |  |                          
     |  |  +-- Obliquaria          
     +--+--+                       
        |  +-- Plectomerus **         
        |                          
        |  +-- Villosa             
        |  |                       
        |  +-- Ellipsaria          
        |  |                       
        +--+-- Lampsilis           
           |                       
           +-- Potamilus_purpuratus
           |                       
           +-- Ptychobranchus      

Huang et al., 2002 [Publ 2657], fig. 1

iTtTbiriSoTroTroSiD
2100232123178
  +----------------------------- Megalonaias         
  |                                                  
  |                       +----- Elliptoideus        
--+  +--------------------+                          
  |  |                    |  +-- Uniomerus           
  |  |                    +--+                       
  +--+                       +-- Pleurobema          
     |                                               
     |  +----------------------- Amblema **             
     |  |                                            
     +--+                    +-- Obliquaria          
        |  +-----------------+                       
        |  |                 +-- Plectomerus **         
        +--+                                         
           |  +----------------- Medionidus          
           +--+                                      
              |  +-------------- Potamilus_fragilis  
              +--+                                   
                 |  +----------- Ptychobranchus      
                 +--+                                
                    |  +-------- Potamilus_purpuratus
                    +--+                             
                       |  +----- Lampsilis           
                       +--+                          
                          |  +-- Villosa             
                          +--+                       
                             +-- Ellipsaria          

Lydeard et al., 1996 [Publ 2656], fig. 4

iTtTbiriSoTroTroSiD
2110226163179
              +-- Megalonaias 
  +-----------+               
  |           +-- Quadrulina  
  |                           
--+        +----- Amblema **     
  |  +-----+                  
  |  |     |  +-- Plectomerus ** 
  |  |     +--+               
  +--+        +-- Lampsilini  
     |                        
     |  +-------- Elliptoideus
     +--+                     
        |  +----- Uniomerus   
        +--+                  
           |  +-- Eurynia     
           +--+               
              +-- Pleurobema  

Lopes-Lima et al., 2019 [Publ 3901], fig. 4

iTtTbiriSoTroTroSiD
220124203--
  +-------- Quadrulini  
--+                     
  |  +----- Amblema **     
  +--+                  
     |  +-- Pleurobemini
     +--+               
        +-- Lampsilini  

Burlakova et al., 2019 [Publ 3899], fig. 1

iTtTbiriSoTroTroSiD
2310231314179
  +-------------------------- Quadrulini           
  |                                                
  |  +----------------------- Plectomerus **          
--+  |                                             
  |  |  +-------------------- Popenaiadini         
  |  |  |                                          
  |  |  +-------------------- Pleurobemini         
  +--+  |                                          
     |  |                 +-- Cyrtonaias           
     |  |              +--+                        
     |  |              |  +-- Glebula              
     |  +--------------+                           
     |  |              |  +-- Reginaia **             
     +--+              +--+                        
        |                 +-- Obliquaria           
        |                                          
        |  +----------------- Toxolasma            
        |  |                                       
        |  |  +-------------- Potamilus            
        |  |  |                                    
        |  |  |           +-- Ellipsaria           
        |  |  +-----------+                        
        +--+  |           +-- Truncilla            
           |  |                                    
           |  |        +----- Medionidus           
           |  +--------+                           
           |  |        |  +-- Lemiox               
           |  |        +--+                        
           +--+           +-- Dromus               
              |                                    
              |  +----------- Cambarunio           
              |  |                                 
              |  +----------- Leaunio              
              |  |                                 
              |  +----------- Villosa              
              |  |                                 
              |  |        +-- Sagittunio           
              |  +--------+                        
              +--+        +-- Lampsilis_ovata      
                 |                                 
                 |     +----- Venustaconcha        
                 +-----+                           
                 |     |  +-- Epioblasma           
                 |     +--+                        
                 |        +-- Obovaria             
                 |                                 
                 |  +-------- Lampsilis_teres      
                 +--+                              
                    |  +----- Lampsilis_siliquoidea
                    +--+                           
                       |  +-- Lampsilis_hydiana    
                       +--+                        
                          +-- Lampsilis_straminea  

Inoue et al., 2014 [Publ 3635], fig. 3B

iTtTbiriSoTroTroSiD
1101700--
-- Amblema_plicata **

Prié & Puillandre, 2014 [Publ 3529], fig. 2

iTtTbiriSoTroTroSiD
11011600--
-- Amblema_plicata **

Bolotov et al., 2017 [Publ 3761], fig. S1

iTtTbiriSoTroTroSiD
110113883--
     +-- Amblema **     
  +--+               
  |  +-- Lampsilini  
--+                  
  |  +-- Quadrulini  
  +--+               
     +-- Pleurobemini

Rosenberg et al., 1994 [Publ 2719], fig. 3

iTtTbiriSoTroTroSiD
110118103--
-- Plectomerus_dombeyanus **

Burdick & White, 2007 [Publ 2679], fig. 3

iTtTbiriSoTroTroSiD
110129292--
  +-------------------------------- Lampsilini            
  |                                                       
--+  +----------------------------- Parvaspina            
  |  |                                                    
  |  |  +-------------------------- Reginaia **              
  +--+  |                                                 
     |  |                    +----- Eurynia               
     |  |  +-----------------+                            
     +--+  |                 |  +-- Plethobasus           
        |  |                 +--+                         
        |  |                    +-- Elliptio              
        |  |                                              
        |  |  +-------------------- Pleurobema_plenum     
        +--+  |                                           
           |  +-------------------- Pleuronaia            
           |  |                                           
           |  |                 +-- Pleurobema_cordatum__1
           |  |           +-----+                         
           |  |           |     +-- Fusconaia             
           +--+  +--------+                               
              |  |        |  +----- Pleurobema_sintoxia__1
              |  |        |  |                            
              |  |        +--+  +-- Pleurobema_cordatum__2
              |  |           |  |                         
              |  |           +--+-- Pleurobema_sintoxia__2
              |  |              |                         
              +--+              +-- Pleurobema_sintoxia__3
                 |                                        
                 |  +-------------- Pleurobema_stabile    
                 |  |                                     
                 |  |           +-- Pleurobema_rubellum   
                 |  |     +-----+                         
                 |  |     |     +-- Pleurobema_strodeanum 
                 +--+  +--+                               
                    |  |  |  +----- Pleurobema_beadleianum
                    |  |  +--+                            
                    |  |     |  +-- Pleurobema_perovatum  
                    |  |     +--+                         
                    +--+        +-- Pleurobema_taitianum  
                       |                                  
                       |        +-- Pleurobema_clava      
                       |  +-----+                         
                       |  |     +-- Pleurobema_oviforme   
                       |  |                               
                       +--+     +-- Pleurobema_decisum    
                          |  +--+                         
                          |  |  +-- Pleurobema_hanleyianum
                          +--+                            
                             |  +-- Pleurobema_pyriforme  
                             +--+                         
                                +-- Pleurobema_georgianum 

Perkins et al., 2017 [Publ 3777], fig. 3

iTtTbiriSoTroTroSiD
110123232--
  +-- Plectomerus ** 
  |               
--+-- Quadrulini  
  |               
  +-- Pleurobemini

Zanatta & Murphy, 2006 [Publ 2672], fig. 2

iTtTbiriSoTroTroSiD
110156543--
  +----- Pleurobemini
  |                  
--+  +-- Amblema **     
  |  |               
  +--+-- Popenaiadini
     |               
     +-- Lampsilini  

Zanatta & Murphy, 2006 [Publ 2672], fig. 1

iTtTbiriSoTroTroSiD
110155533--
  +-------- Lampsilini  
--+                     
  |  +----- Pleurobemini
  +--+                  
     |  +-- Amblema **     
     +--+               
        +-- Popenaiadini

Campbell et al., 2008 [Publ 2675], fig. 6

iTtTbiriSoTroTroSiD
110125252--
  +-- Lampsilini  
  |               
--+-- Plectomerus ** 
  |               
  +-- Pleurobemini

Dai et al., 2023 [Publ 4285], fig. 5

iTtTbiriSoTroTroSiD
110152144--
  +----------- Quadrulini  
--+                        
  |  +-------- Pleurobemini
  +--+                     
     |  +----- Amblema **     
     +--+                  
        |  +-- Popenaiadini
        +--+               
           +-- Lampsilini  

Wu et al., 2018 [Publ 3836], fig. 2

iTtTbiriSoTroTroSiD
11015283--
  +-- Amblema **   
--+             
  +-- Lampsilini

Bolotov et al., 2017 [Publ 3761], fig. S2

iTtTbiriSoTroTroSiD
110113883--
     +-- Amblema **     
  +--+               
  |  +-- Lampsilini  
--+                  
  |  +-- Quadrulini  
  +--+               
     +-- Pleurobemini

Graf & Ó Foighil, 2000 [Publ 2649], fig. 1_2

iTtTbiriSoTroTroSiD
11011011--
  +-- Amblema **   
--+             
  +-- Lampsilini

Kandl et al., 2001 [Publ 3384], fig. 5

iTtTbiriSoTroTroSiD
1101882--
  +-- Amblema **     
  |               
--+-- Quadrulini  
  |               
  +-- Pleurobemini

Jeratthitikul et al., 2022 [Publ 4260], fig. S1_1

iTtTbiriSoTroTroSiD
11017583--
     +-- Amblema **     
  +--+               
  |  +-- Lampsilini  
--+                  
  |  +-- Quadrulini  
  +--+               
     +-- Pleurobemini

Smith, 2021 [Publ 4331], fig. 1

iTtTbiriSoTroTroSiD
11011983--
  +-------- Quadrulini  
--+                     
  |  +----- Pleurobemini
  +--+                  
     |  +-- Amblema **     
     +--+               
        +-- Lampsilini  

Wu et al., 2022 [Publ 4238], fig. 3

iTtTbiriSoTroTroSiD
110172144--
  +----------- Quadrulini  
--+                        
  |  +-------- Pleurobemini
  +--+                     
     |  +----- Amblema **     
     +--+                  
        |  +-- Popenaiadini
        +--+               
           +-- Lampsilini  

Graf, 2002 [Publ 2651], fig. 2

iTtTbiriSoTroTroSiD
11011732--
  +----- Lampsilini  
--+                  
  |  +-- Pleurobemini
  +--+               
     +-- Amblema **     

Matos et al., 2024 [Publ 4383], fig. 3

iTtTbiriSoTroTroSiD
11011900--
-- Amblema_plicata **

Campbell et al., 2008 [Publ 2675], fig. 5

iTtTbiriSoTroTroSiD
110124243--
  +----------- Quadrulini               
  |                                     
  +----------- Plectomerus **              
  |                                     
  |        +-- Elliptio_arctata         
  |  +-----+                            
  |  |     +-- Elliptio_crassidens      
  |  |                                  
  |  |  +----- Pleurobema_decisum       
--+  |  |                               
  |  |  +----- Pleurobema_rubellum      
  |  |  |                               
  |  |  +----- Pleurobema_georgianum__2 
  |  |  |                               
  |  |  +----- Pleurobema_stabile       
  |  |  |                               
  |  |  +----- Pleurobema_pyriforme     
  |  |  |                               
  +--+  +----- Pleurobema_oviforme__2   
     |  |                               
     |  +----- Pleurobema_hanleyianum__2
     |  |                               
     |  +----- Pleuronaia               
     |  |                               
     |  +----- Pleurobema_georgianum__3 
     |  |                               
     |  +----- Pleurobema_cordatum      
     |  |                               
     |  +----- Pleurobema_beadleianum   
     |  |                               
     |  +----- Hemistena                
     +--+                               
        +----- Fusconaia_flava          
        |                               
        +----- Fusconaia_cerina         
        |                               
        +----- Eurynia                  
        |                               
        +----- Elliptio_arca            
        |                               
        +----- Lampsilini               
        |                               
        |  +-- Plethobasus              
        +--+                            
        |  +-- Parvaspina               
        |                               
        |  +-- Pleurobema_sintoxia      
        |  |                            
        +--+-- Pleurobema_oviforme__1   
        |  |                            
        |  +-- Pleurobema_clava         
        |                               
        |  +-- Pleurobema_athearni      
        |  |                            
        +--+-- Pleurobema_georgianum__1 
           |                            
           +-- Pleurobema_hanleyianum__1

Chase et al., 2018 [Publ 3847], fig. 4

iTtTbiriSoTroTroSiD
110137163--
-- Reginaia_ebenus **

Inoue et al., 2014 [Publ 3635], fig. 3A

iTtTbiriSoTroTroSiD
11011933--
-- Amblema_plicata **

Wu et al., 2023 [Publ 4339], fig. 4_S5-aa

iTtTbiriSoTroTroSiD
110194164--
  +----------- Quadrulini  
--+                        
  |  +-------- Pleurobemini
  +--+                     
     |  +----- Amblema **     
     +--+                  
        |  +-- Popenaiadini
        +--+               
           +-- Lampsilini  

Hoeh et al., 2009 [Publ 2716], fig. 5

iTtTbiriSoTroTroSiD
110145123--
           +-- Obliquaria    
  +--------+                 
  |        +-- Quadrulini    
  |                          
--+  +-------- Amblema **       
  |  |                       
  |  +-------- Pleurobemini  
  +--+                       
     |  +----- Truncilla     
     |  |                    
     |  +----- Ptychobranchus
     +--+                    
        |  +-- Ortmanniana   
        |  |                 
        |  +-- Cambarunio    
        +--+                 
           +-- Ligumia       
           |                 
           +-- Epioblasma    

Wu et al., 2021 [Publ 4366], fig. 4

iTtTbiriSoTroTroSiD
110167114--
  +----------- Quadrulini  
--+                        
  |  +-------- Pleurobemini
  +--+                     
     |  +----- Amblema **     
     +--+                  
        |  +-- Popenaiadini
        +--+               
           +-- Lampsilini  

Hoeh et al., 2009 [Publ 2716], fig. 3

iTtTbiriSoTroTroSiD
110146133--
              +-------- Amblema **       
  +-----------+                       
  |           |  +----- Pleurobemini  
  |           +--+                    
  |              |  +-- Obliquaria    
--+              +--+                 
  |                 +-- Quadrulini    
  |                                   
  |  +----------------- Ptychobranchus
  +--+                                
     |  +-------------- Truncilla     
     +--+                             
        |  +----------- Ortmanniana   
        +--+                          
           |  +-------- Lampsilis     
           +--+                       
              |  +----- Cambarunio    
              +--+                    
                 |  +-- Ligumia       
                 +--+                 
                    +-- Epioblasma    

Wu et al., 2021 [Publ 4366], fig. 3-ML

iTtTbiriSoTroTroSiD
110172144--
  +----------- Quadrulini  
--+                        
  |  +-------- Pleurobemini
  +--+                     
     |  +----- Amblema **     
     +--+                  
        |  +-- Popenaiadini
        +--+               
           +-- Lampsilini  

Whelan et al., 2011 [Publ 3380], fig. 1-MP

iTtTbiriSoTroTroSiD
11013543--
  +----- Quadrulini  
  |                  
--+----- Pleurobemini
  |                  
  |  +-- Amblema **     
  +--+               
     +-- Lampsilini  

Wu et al., 2024 [Publ 4350], fig. 8a_S1

iTtTbiriSoTroTroSiD
110190164--
  +----------- Quadrulini  
--+                        
  |  +-------- Pleurobemini
  +--+                     
     |  +----- Amblema **     
     +--+                  
        |  +-- Popenaiadini
        +--+               
           +-- Lampsilini  

Burlakova et al., 2012 [Publ 3486], fig. 3

iTtTbiriSoTroTroSiD
110135351--
  +-- Plectomerus ** 
--+               
  +-- Pleurobemini

Araujo et al., 2009 [Publ 2589], fig. 7B

iTtTbiriSoTroTroSiD
11011000--
-- Amblema_plicata **

Bolotov et al., 2017 [Publ 3764], fig. S1

iTtTbiriSoTroTroSiD
110112483--
  +-- Amblema **           
  |                     
  +-- Ortmanniana       
  |                     
  +-- Lampsilis         
  |                     
  +-- Cambarunio        
  |                     
--+-- Elliptio          
  |                     
  +-- Eurynia           
  |                     
  +-- Pleurobema        
  |                     
  +-- Quadrula_quadrula 
  |                     
  +-- Quadrula_verrucosa

Campbell et al., 2008 [Publ 2675], fig. 4

iTtTbiriSoTroTroSiD
110124243--
  +----------------------- Quadrulini               
  |                                                 
  +----------------------- Plectomerus **              
  |                                                 
  |  +-------------------- Lampsilini               
  |  |                                              
  |  +-------------------- Eurynia                  
  |  |                                              
  |  +-------------------- Fusconaia_cerina         
--+  |                                              
  |  +-------------------- Fusconaia_flava          
  |  |                                              
  |  +-------------------- Hemistena                
  |  |                                              
  |  +-------------------- Plethobasus              
  |  |                                              
  |  +-------------------- Parvaspina               
  |  |                                              
  +--+-------------------- Pleurobema_cordatum      
     |                                              
     +-------------------- Pleuronaia               
     |                                              
     +-------------------- Pleurobema_oviforme__2   
     |                                              
     +-------------------- Pleurobema_stabile       
     |                                              
     +-------------------- Elliptio                 
     |                                              
     |  +----------------- Pleurobema_decisum       
     |  |                                           
     |  +----------------- Pleurobema_sintoxia      
     |  |                                           
     |  +----------------- Pleurobema_clava         
     +--+                                           
        +----------------- Pleurobema_oviforme__1   
        |                                           
        |  +-------------- Pleurobema_beadleianum   
        |  |                                        
        +--+  +----------- Pleurobema_pyriforme     
           |  |                                     
           +--+  +-------- Pleurobema_rubellum      
              |  |                                  
              |  +-------- Pleurobema_hanleyianum__2
              +--+                                  
                 +-------- Pleurobema_georgianum__2 
                 |                                  
                 |  +----- Pleurobema_hanleyianum__1
                 +--+                               
                    |  +-- Pleurobema_georgianum__1 
                    +--+                            
                       +-- Pleurobema_athearni      

Hoeh et al., 2001 [Publ 2652], fig. 14f2

iTtTbiriSoTroTroSiD
110130103--
-- Amblema_plicata **

Roe & Hoeh, 2003 [Publ 2655], fig. 4f3

iTtTbiriSoTroTroSiD
110130103--
  +-------- Amblema **     
--+                     
  |  +----- Lampsilini  
  +--+                  
     |  +-- Quadrulini  
     +--+               
        +-- Pleurobemini

Araujo et al., 2009 [Publ 2589], fig. 7A

iTtTbiriSoTroTroSiD
11011000--
-- Amblema_plicata **

Jeratthitikul et al., 2022 [Publ 4260], fig. S2_2

iTtTbiriSoTroTroSiD
11017583--
     +-- Amblema **     
  +--+               
  |  +-- Lampsilini  
--+                  
  |  +-- Quadrulini  
  +--+               
     +-- Pleurobemini

Hoeh et al., 1998 [Publ 2695], fig. 3

iTtTbiriSoTroTroSiD
1101400--
-- Amblema_plicata **

Campbell et al., 2008 [Publ 2675], fig. 2

iTtTbiriSoTroTroSiD
110125252--
  +-- Lampsilini  
  |               
--+-- Plectomerus ** 
  |               
  +-- Pleurobemini

Bolotov et al., 2018 [Publ 3826], fig. 2

iTtTbiriSoTroTroSiD
11018263--
-- Amblema_plicata **

Zieritz et al., 2024 [Publ 4381], fig. 2

iTtTbiriSoTroTroSiD
11014511--
  +-- Amblema **   
--+             
  +-- Lampsilini

Wu et al., 2021 [Publ 4366], fig. 3-BI

iTtTbiriSoTroTroSiD
110172144--
  +----------- Quadrulini  
--+                        
  |  +-------- Pleurobemini
  +--+                     
     |  +----- Amblema **     
     +--+                  
        |  +-- Popenaiadini
        +--+               
           +-- Lampsilini  

Porto-Hannes et al., 2019 [Publ 3969], fig. 2

iTtTbiriSoTroTroSiD
110117171--
  +-- Amblema **   
--+             
  +-- Lampsilini

Porto-Hannes et al., 2019 [Publ 3969], fig. 3

iTtTbiriSoTroTroSiD
110117171--
  +-------------------- Obliquaria           
  |                                          
  +-------------------- Amblema **              
  |                                          
  |  +----------------- Lampsilis_teres      
  |  |                                       
  |  +----------------- Obovaria             
--+  |                                       
  |  |              +-- Leaunio              
  |  +--------------+                        
  |  |              +-- Cambarunio           
  |  |                                       
  |  |        +-------- Ortmanniana          
  |  |        |                              
  +--+--------+     +-- Lampsilis_hydiana    
     |        |  +--+                        
     |        |  |  +-- Lampsilis_virescens  
     |        +--+                           
     |           |  +-- Lampsilis_siliquoidea
     |           +--+                        
     |              +-- Lampsilis_radiata    
     |                                       
     |  +-------------- Lampsilis_bracteata  
     |  |                                    
     +--+  +----------- Lampsilis_ornata     
        |  |                                 
        +--+  +-------- Lampsilis_ovata      
           |  |                              
           +--+  +----- Lampsilis_cardium__3 
              |  |                           
              +--+  +-- Lampsilis_satura     
                 |  |                        
                 +--+-- Lampsilis_cardium__1 
                    |                        
                    +-- Lampsilis_cardium__2 

Konopleva et al., 2023 [Publ 4269], fig. S1_4

iTtTbiriSoTroTroSiD
11015511--
  +-- Lampsilini
--+             
  +-- Amblema **   

Lopes-Lima et al., 2017 [Publ 3745], fig. 1-2

iTtTbiriSoTroTroSiD
11017983--
     +-- Amblema **     
  +--+               
  |  +-- Lampsilini  
--+                  
  |  +-- Quadrulini  
  +--+               
     +-- Pleurobemini

Whelan et al., 2011 [Publ 3380], fig. 1-ML

iTtTbiriSoTroTroSiD
11013543--
  +-------- Pleurobemini
--+                     
  |  +----- Quadrulini  
  +--+                  
     |  +-- Amblema **     
     +--+               
        +-- Lampsilini  

Neemuchwala et al., 2023 [Publ 4292], fig. 2

iTtTbiriSoTroTroSiD
110126254--
  +----------- Quadrulini  
--+                        
  |  +-------- Pleurobemini
  +--+                     
     |  +----- Amblema **     
     +--+                  
        |  +-- Lampsilini  
        +--+               
           +-- Popenaiadini

Araujo et al., 2017 [Publ 3801], fig. 2

iTtTbiriSoTroTroSiD
11011311--
  +-- Amblema **   
--+             
  +-- Lampsilini

Breton et al., 2011 [Publ 3376], fig. 3

iTtTbiriSoTroTroSiD
110136173--
  +-------- Quadrulini  
--+                     
  |  +----- Pleurobemini
  +--+                  
     |  +-- Reginaia **    
     +--+               
        +-- Lampsilini  

Teiga-Teixeira et al., 2020 [Publ 4173], fig. 1

iTtTbiriSoTroTroSiD
110118134--
  +----------- Quadrulini  
--+                        
  |  +-------- Pleurobemini
  +--+                     
     |  +----- Amblema **     
     +--+                  
        |  +-- Popenaiadini
        +--+               
           +-- Lampsilini  

Bogan & Hoeh, 2000 [Publ 2650], fig. 1

iTtTbiriSoTroTroSiD
110133103--
  +-------- Toxolasma   
  |                     
  +-------- Amblema **     
  |                     
  |     +-- Glebula     
  +-----+               
--+     +-- Cyrtonaias  
  |                     
  |     +-- Quadrulini  
  +-----+               
  |     +-- Pleurobemini
  |                     
  |  +----- Potamilus   
  +--+                  
     |  +-- Ortmanniana 
     +--+               
        +-- Ligumia     

Araujo et al., 2009 [Publ 2589], fig. 7C

iTtTbiriSoTroTroSiD
1101900--
-- Amblema_plicata **

Graf & Ó Foighil, 2000 [Publ 2648], fig. 2B

iTtTbiriSoTroTroSiD
110129163--
     +-- Quadrulini  
  +--+               
  |  +-- Pleurobemini
--+                  
  |  +-- Amblema **     
  +--+               
     +-- Lampsilini  

Matos et al., 2024 [Publ 4384], fig. 3

iTtTbiriSoTroTroSiD
11011900--
-- Amblema_plicata **

Pfeiffer & Graf, 2015 [Publ 3620], fig. 2

iTtTbiriSoTroTroSiD
11013942--
  +----- Quadrulini
--+                
  |  +-- Amblema **   
  +--+             
     +-- Lampsilini

Szumowski et al., 2012 [Publ 3569], fig. 4

iTtTbiriSoTroTroSiD
110115151--
  +-- Amblema **   
--+             
  +-- Lampsilini

Turner et al., 2000 [Publ 2722], fig. 2

iTtTbiriSoTroTroSiD
110113113--
  +----- Lampsilini  
--+                  
  |  +-- Amblema **     
  +--+               
     +-- Pleurobemini

Hoeh et al., 1998 [Publ 2695], fig. 4

iTtTbiriSoTroTroSiD
1101400--
-- Amblema_plicata **

Lopes-Lima et al., 2020 [Publ 4080], fig. 2-4

iTtTbiriSoTroTroSiD
110112033--
  +-- Amblema **     
  |               
  +-- Pleurobemini
--+               
  +-- Lampsilini  
  |               
  +-- Quadrulini  

Reis et al., 2013 [Publ 3580], fig. 5

iTtTbiriSoTroTroSiD
11011411--
  +-- Amblema **   
--+             
  +-- Quadrulini

Roe & Hoeh, 2003 [Publ 2655], fig. 4f2

iTtTbiriSoTroTroSiD
110130103--
-- Amblema_plicata **

Mejia-Trujillo & Smith, 2022 [Publ 4274], fig. 2-F

iTtTbiriSoTroTroSiD
110114144--
     +----------- Toxolasma            
  +--+                                 
  |  |  +-------- Popenaiadini         
  |  +--+                              
  |     |  +----- Amblema **              
  |     +--+                           
--+        |  +-- Quadrulini           
  |        +--+                        
  |           +-- Pleurobemini         
  |                                    
  |  +----------- Potamilus            
  |  |                                 
  +--+        +-- Lampsilis_cardium    
     |  +-----+                        
     |  |     +-- Lampsilis_ornata     
     +--+                              
        |  +----- Venustaconcha        
        +--+                           
           |  +-- Lampsilis_siliquoidea
           +--+                        
              +-- Lampsilis_powellii   

Manendo et al., 2008 [Publ 2669], fig. 1

iTtTbiriSoTroTroSiD
11011242--
  +----- Lampsilini  
--+                  
  |  +-- Amblema **     
  +--+               
     +-- Pleurobemini

Hoeh et al., 2001 [Publ 2652], fig. 14f4

iTtTbiriSoTroTroSiD
110130103--
  +-------- Amblema **     
--+                     
  |  +----- Lampsilini  
  +--+                  
     |  +-- Quadrulini  
     +--+               
        +-- Pleurobemini

Keogh & Simons, 2019 [Publ 3935], fig. S1

iTtTbiriSoTroTroSiD
1101992--
  +----- Lampsilini  
--+                  
  |  +-- Amblema **     
  +--+               
     +-- Pleurobemini

Zieritz et al., 2021 [Publ 4218], fig. 5

iTtTbiriSoTroTroSiD
11013111--
  +-- Amblema **   
--+             
  +-- Lampsilini

Dai et al., 2025 [Publ 4440], fig. 3

iTtTbiriSoTroTroSiD
110187154--
  +----------- Quadrulini  
--+                        
  |  +-------- Pleurobemini
  +--+                     
     |  +----- Amblema **     
     +--+                  
        |  +-- Popenaiadini
        +--+               
           +-- Lampsilini  

Pfeiffer & Graf, 2013 [Publ 3531], fig. 2

iTtTbiriSoTroTroSiD
11013043--
  +-------- Quadrulini  
--+                     
  |  +----- Pleurobemini
  +--+                  
     |  +-- Amblema **     
     +--+               
        +-- Lampsilini  

Dai et al., 2024 [Publ 4358], fig. 4

iTtTbiriSoTroTroSiD
110151114--
  +----------- Quadrulini  
--+                        
  |  +-------- Pleurobemini
  +--+                     
     |  +----- Amblema **     
     +--+                  
        |  +-- Popenaiadini
        +--+               
           +-- Lampsilini  

Grobler et al., 2011 [Publ 3359], fig. 2

iTtTbiriSoTroTroSiD
110116161--
  +-- Amblema **   
--+             
  +-- Lampsilini

Graf & Cummings, 2006 [Publ 1968], fig. 2

iTtTbiriSoTroTroSiD
110146133--
  +-------- Quadrulini  
--+                     
  |  +----- Amblema **     
  +--+                  
     |  +-- Pleurobemini
     +--+               
        +-- Lampsilini  

Wu et al., 2024 [Publ 4350], fig. 8b_S2

iTtTbiriSoTroTroSiD
110190164--
  +----------- Quadrulini  
--+                        
  |  +-------- Pleurobemini
  +--+                     
     |  +----- Amblema **     
     +--+                  
        |  +-- Popenaiadini
        +--+               
           +-- Lampsilini  

Reis et al., 2013 [Publ 3580], fig. 4

iTtTbiriSoTroTroSiD
11011311--
  +-- Amblema **   
--+             
  +-- Quadrulini

Graf & Ó Foighil, 2000 [Publ 2648], fig. 2A

iTtTbiriSoTroTroSiD
110129163--
     +-- Quadrulini  
  +--+               
  |  +-- Pleurobemini
--+                  
  |  +-- Amblema **     
  +--+               
     +-- Lampsilini  

Porto-Hannes et al., 2021 [Publ 4227], fig. 4

iTtTbiriSoTroTroSiD
110110103--
  +-------- Quadrula    
  |                     
--+-------- Pustulosa   
  |                     
  |  +----- Pleurobemini
  +--+                  
     |  +-- Amblema **     
     +--+               
        +-- Lampsilini  

Jadhav & Jamkhedkar, 2009 [Publ 3697], fig. 11

iTtTbiriSoTroTroSiD
110124123--
              +----- Eurynia       
  +-----------+                    
  |           |  +-- Cambarunio    
  |           +--+                 
  |              +-- Ptychobranchus
--+                                
  |              +-- Amblema **       
  |  +-----------+                 
  |  |           +-- Pleurobema    
  +--+                             
     |  +----------- Truncilla     
     |  |                          
     +--+        +-- Lampsilis     
        |  +-----+                 
        |  |     +-- Epioblasma    
        +--+                       
           |  +----- Ligumia       
           +--+                    
              |  +-- Obliquaria    
              +--+                 
                 +-- Ortmanniana   

Wu et al., 2023 [Publ 4339], fig. 4_S5-nt

iTtTbiriSoTroTroSiD
110194164--
  +----------- Quadrulini  
--+                        
  |  +-------- Pleurobemini
  +--+                     
     |  +----- Amblema **     
     +--+                  
        |  +-- Popenaiadini
        +--+               
           +-- Lampsilini  

Johnson et al., 2018 [Publ 3844], fig. 2

iTtTbiriSoTroTroSiD
110115152--
  +----- Amblema **     
--+                  
  |  +-- Pleurobemini
  +--+               
     +-- Quadrulini  

Khalloufi et al., 2011 [Publ 2748], fig. 2

iTtTbiriSoTroTroSiD
11011000--
-- Amblema_plicata **

Bolotov et al., 2020 [Publ 4084], fig. 1

iTtTbiriSoTroTroSiD
11013563--
  +-- Amblema **    
  |              
  +-- Ortmanniana
  |              
  +-- Lampsilis  
  |              
--+-- Cambarunio 
  |              
  +-- Elliptio   
  |              
  +-- Pleurobema 
  |              
  +-- Quadrulini 

Hoeh et al., 2002 [Publ 2653], fig. 2

iTtTbiriSoTroTroSiD
110130103--
           +-- Glebula     
  +--------+               
  |        +-- Cyrtonaias  
  |                        
--+  +-------- Toxolasma   
  |  |                     
  |  |  +----- Potamilus   
  |  +--+                  
  +--+  |  +-- Ligumia     
     |  +--+               
     |     +-- Ortmanniana 
     |                     
     |  +----- Amblema **     
     +--+                  
        |  +-- Quadrulini  
        +--+               
           +-- Pleurobemini

Marshall et al., 2014 [Publ 3593], fig. 1

iTtTbiriSoTroTroSiD
11011300--
-- Amblema_plicata **
 
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