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Page last updated
Thu 3 September 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!

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Bivalvia | Unionoida | Unionoidea | Unionidae | Unioninae | Anodontini | Alasmidontina

genus Pseudodontoideus Frierson, 1927: cladomics
     2 Recent valid species (2 total species)

Cladomics Summary

number of species = 2 (2 total)
analyzed in 10 cladograms in 7 publications
maximum number of terminals in an analysis = 2 (mean = 1.5, median = 1.5)

Basic Monophyly

number of cladograms that test basic monophyly (i.e., more than 1 included species) = 5
maximum number of included terminals = 2, (mean = 2 median = 2)
proportion of cladograms that support basic monophyly = 1


Whelan et al., 2023 [Publ 4287], fig. 4

** Top Monophyly Cladogram **

iTtTbiriSoTroTroSiD
2204252310--
  +----------------------- Sulcularia                         
  |                                                           
  |        +-------------- Alasmidonta                        
  |  +-----+                                                  
--+  |     |  +----------- Platynaias                         
  |  |     +--+                                               
  |  |        |  +-------- Strophitus                         
  |  |        +--+                                            
  |  |           |  +----- Pyganodon                          
  +--+           +--+                                         
     |              |  +-- Utterbackia                        
     |              +--+                                      
     |                 +-- Anodontoides                       
     |                                                        
     |  +----------------- Utterbackiana                      
     +--+                                                     
        |  +-------------- Alasminota                         
        +--+                                                  
           |  +----------- Arcidens                           
           +--+                                               
              |  +-------- Pseudodontoideus_connasaugaensis__3 **
              +--+                                            
                 |  +----- Pseudodontoideus_connasaugaensis__2 **
                 +--+                                         
                    |  +-- Pseudodontoideus_subvexus **          
                    +--+                                      
                       +-- Pseudodontoideus_connasaugaensis__1 **

Perkins et al., 2025 [Publ 4447], fig. 2_mtDNA-ITS

** Top Sister-Group Cladogram **

iTtTbiriSoTroTroSiD
2202343114--
     +-------------- Utterbackiana                   
     |                                               
  +--+  +----------- Alasminota                      
  |  |  |                                            
  |  +--+        +-- Pseudodontoideus_subvexus **       
  |     |  +-----+                                   
  |     |  |     +-- Pseudodontoideus_connasaugaensis **
  |     +--+                                         
  |        |  +----- Lasmigona                       
  |        +--+                                      
  |           |  +-- Pterosyna                       
--+           +--+                                   
  |              +-- Arcidens                        
  |                                                  
  |              +-- Prolasmidonta                   
  |           +--+                                   
  |           |  +-- Platynaias                      
  |     +-----+                                      
  |     |     |  +-- Ligodonta                       
  |     |     +--+                                   
  |     |        +-- Alasmidonta                     
  +-----+                                            
        |        +-- Anodontoides                    
        |  +-----+                                   
        |  |     +-- Strophitus                      
        +--+                                         
           |  +----- Sulcularia                      
           +--+                                      
              |  +-- Pyganodon                       
              +--+                                   
                 +-- Utterbackia                     

Smith et al., 2018 [Publ 3790], fig. 1

iTtTbiriSoTroTroSiD
220216157--
              +-- Utterbackia                     
  +-----------+                                   
  |           +-- Pyganodon                       
  |                                               
--+           +-- Anodontoides                    
  |  +--------+                                   
  |  |        +-- Strophitus                      
  |  |                                            
  +--+        +-- Alasmidonta                     
     |  +-----+                                   
     |  |     +-- Alasminota                      
     +--+                                         
        |  +----- Utterbackiana                   
        +--+                                      
           |  +-- Pseudodontoideus_connasaugaensis **
           +--+                                   
              +-- Pseudodontoideus_subvexus **       

Whelan et al., 2023 [Publ 4287], fig. 3

iTtTbiriSoTroTroSiD
2202262511--
  +-------------------- Utterbackiana                   
  |                                                     
  |                 +-- Utterbackia                     
--+  +--------------+                                   
  |  |              +-- Pyganodon                       
  |  |                                                  
  |  |        +-------- Alasmidonta                     
  +--+  +-----+                                         
     |  |     |  +----- Arcidens                        
     |  |     +--+                                      
     |  |        |  +-- Pseudodontoideus_connasaugaensis **
     +--+        +--+                                   
        |           +-- Pseudodontoideus_subvexus **       
        |                                               
        |  +----------- Alasminota                      
        |  |                                            
        +--+        +-- Anodontoides                    
           |  +-----+                                   
           |  |     +-- Strophitus                      
           +--+                                         
              |  +----- Sulcularia                      
              +--+                                      
                 |  +-- Platynaias                      
                 +--+                                   
                    +-- Prolasmidonta                   

Whelan et al., 2023 [Publ 4287], fig. 2

iTtTbiriSoTroTroSiD
2202393113--
                 +-- Utterbackia                     
  +--------------+                                   
  |              +-- Pyganodon                       
  |                                                  
  |     +----------- Utterbackiana                   
  |     |                                            
  |  +--+        +-- Pterosyna                       
--+  |  |  +-----+                                   
  |  |  |  |     +-- Arcidens                        
  |  |  +--+                                         
  |  |     |  +----- Lasmigona                       
  |  |     +--+                                      
  |  |        |  +-- Pseudodontoideus_subvexus **       
  +--+        +--+                                   
     |           +-- Pseudodontoideus_connasaugaensis **
     |                                               
     |        +----- Sulcularia                      
     |     +--+                                      
     |     |  |  +-- Anodontoides                    
     |     |  +--+                                   
     |     |     +-- Strophitus                      
     +-----+                                         
           |     +-- Prolasmidonta                   
           |  +--+                                   
           |  |  +-- Platynaias                      
           +--+                                      
              |  +-- Alasminota                      
              +--+                                   
                 +-- Alasmidonta                     

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

iTtTbiriSoTroTroSiD
110110133--
  +----- Pyganodon                
--+                               
  |  +-- Lasmigona                
  +--+                            
     +-- Pseudodontoideus_subvexus **

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

iTtTbiriSoTroTroSiD
110119138--
     +-------- Pseudodontoideus_subvexus **
  +--+                                  
  |  |  +----- Lasmigona                
  |  +--+                               
  |     |  +-- Pterosyna                
--+     +--+                            
  |        +-- Arcidens                 
  |                                     
  |  +-------- Strophitus               
  |  |                                  
  +--+     +-- Pyganodon                
     |  +--+                            
     |  |  +-- Utterbackia              
     +--+                               
        |  +-- Platynaias               
        +--+                            
           +-- Alasmidonta              

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

iTtTbiriSoTroTroSiD
1101103159--
-- Pseudodontoideus_subvexus **

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

iTtTbiriSoTroTroSiD
110110133--
  +-- Lasmigona                
--+                            
  +-- Pseudodontoideus_subvexus **

Chong et al., 2008 [Publ 2668], fig. 3

iTtTbiriSoTroTroSiD
11011777--
  +-- Pseudodontoideus_subvexus **
  |                            
--+-- Alasmidonta              
  |                            
  +-- Pterosyna                
 
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