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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!


Publication Pfeiffer et al. (2019): cladograms
     publication summary | cladograms

Complete Citation

Pfeiffer, J.M., J.W. Breinholt & L.M. Page. 2019. Unioverse: a phylogenetic resource for reconstructing the evolution of freshwater mussels (Bivalvia, Unionoida). Molecular Phylogenetics and Evolution 137: 114-126. Available electronically.

Cladogram Figures

(click the figure number to see the cladogram)

Cladogram Figure 4-5
  +----------------------------------------- Neotrigonia_margaritacea     
  |                                                                       
  |                                   +----- Tamsiella_schroeteriana      
  |  +--------------------------------+                                   
  |  |                                |  +-- Etheria_elliptica            
--+  |                                +--+                                
  |  |                                   +-- Aspatharia_pfeifferiana      
  |  |                                                                    
  |  |  +----------------------------------- Hyridella_australis          
  |  |  |                                                                 
  +--+  |                                +-- Margaritifera_margaritifera  
     |  |  +-----------------------------+                                
     |  |  |                             +-- Margaritifera_hembeli        
     |  |  |                                                              
     |  |  |                             +-- Quadrula_quadrula            
     |  |  |        +--------------------+                                
     |  |  |        |                    +-- Uniomerus_tetralasmus        
     +--+  |        |                                                     
        |  |        |                 +----- Elliptoideus_sloatianus      
        |  |  +-----+  +--------------+                                   
        |  |  |     |  |              |  +-- Elliptio_complanata          
        |  |  |     |  |              +--+                                
        |  |  |     |  |                 +-- Pleurobema_strodeanum        
        |  |  |     |  |                                                  
        |  |  |     +--+              +----- Reginaia_ebenus              
        |  |  |        |  +-----------+                                   
        |  |  |        |  |           |  +-- Plectomerus_dombeyanus       
        +--+  |        |  |           +--+                                
           |  |        |  |              +-- Amblema_plicata              
           |  |        +--+                                               
           |  |           |              +-- Psoronaias_semigranosa       
           |  |           |  +-----------+                                
           |  |           |  |           +-- Popenaias_popeii             
           |  |           +--+                                            
           |  |              |  +----------- Obliquaria_reflexa           
           |  |              +--+                                         
           |  |                 |  +-------- Cyrtonaias_tampicoensis      
           |  |                 +--+                                      
           |  |                    |  +----- Leaunio_lienosus             
           |  |                    +--+                                   
           |  |                       |  +-- Lampsilis_cardium            
           |  |                       +--+                                
           |  |                          +-- Pachynaias_spheniopsis       
           |  |                                                           
           +--+                          +-- Chamberlainia_hainesiana     
              |     +--------------------+                                
              |     |                    +-- Sinohyriopsis_cumingii       
              |     |                                                     
              |     |     +----------------- Lamprotula_cornuumlunae      
              |     |  +--+                                               
              |     |  |  |  +-------------- Gonidea_angulata             
              |  +--+  |  +--+                                            
              |  |  |  |     |  +----------- Indopseudodon_kayinensis     
              |  |  |  |     +--+                                         
              |  |  |  |        |  +-------- Bineurus_anodontinum         
              |  |  |  |        +--+                                      
              |  |  |  |           |  +----- Pilsbryoconcha_exilis        
              |  |  |  |           +--+                                   
              |  |  +--+              |  +-- Pseudodon_vondembuschianus   
              |  |     |              +--+                                
              |  |     |                 +-- Sundadontina_tanintharyiensis
              |  |     |                                                  
              |  |     |              +----- Ensidens_ingallsianus        
              |  |     |        +-----+                                   
              |  |     |        |     |  +-- Hyriopsis_bialata            
              |  |     |        |     +--+                                
              |  |     |        |        +-- Rectidens_sumatrensis        
              |  |     +--------+                                         
              |  |              |        +-- Trapezoideus_foliaceus       
              |  |              |  +-----+                                
              +--+              |  |     +-- Physunio_superbus            
                 |              +--+                                      
                 |                 |  +----- Yaukthwa_paiensis            
                 |                 +--+                                   
                 |                    |  +-- Lens_contradens              
                 |                    +--+                                
                 |                       +-- Solenaia_emarginata          
                 |                                                        
                 |              +----------- Lanceolaria_lanceolata       
                 |              |                                         
                 |              |     +----- Unio_gibbus                  
                 |     +--------+  +--+                                   
                 |     |        |  |  |  +-- Nodularia_douglasiae         
                 |     |        |  |  +--+                                
                 |     |        |  |     +-- Tchangsinaia_piscicula       
                 |     |        +--+                                      
                 |     |           |     +-- Cristaria_plicata            
                 |     |           |  +--+                                
                 |     |           |  |  +-- Sinanodonta_woodiana         
                 +-----+           +--+                                   
                       |              |  +-- Anodonta_cygnea              
                       |              +--+                                
                       |                 +-- Pyganodon_grandis            
                       |                                                  
                       |                 +-- Trapezidens_dolichorhynchus  
                       |  +--------------+                                
                       |  |              +-- Lamellidens_savadiensis      
                       |  |                                               
                       +--+              +-- Leoparreysia_tavoyensis      
                          |  +-----------+                                
                          |  |           +-- Leoparreysia_olivacea        
                          |  |                                            
                          +--+           +-- Coelatura_choziensis         
                             |  +--------+                                
                             |  |        +-- Prisodontopsis_aviculaeformis
                             +--+                                         
                                |  +-------- Indonaia_caerulea            
                                +--+                                      
                                   |  +----- Indochinella_pugio           
                                   +--+                                   
                                      |  +-- Scabies_phaselus             
                                      +--+                                
                                         +-- Harmandia_somboriensis       
Cladogram Figure 6
  +-------------------------------- Neotrigonia_margaritacea     
  |                                                              
  |                          +----- Tamsiella_schroeteriana      
  |  +-----------------------+                                   
  |  |                       |  +-- Etheria_elliptica            
  |  |                       +--+                                
  |  |                          +-- Aspatharia_pfeifferiana      
  |  |                                                           
--+  |                       +----- Hyridella_australis          
  |  |  +--------------------+                                   
  |  |  |                    |  +-- Margaritifera_margaritifera  
  |  |  |                    +--+                                
  |  |  |                       +-- Margaritifera_hembeli        
  |  |  |                                                        
  |  |  |                       +-- Quadrula_quadrula            
  |  |  |     +-----------------+                                
  |  |  |     |                 +-- Uniomerus_tetralasmus        
  +--+  |     |                                                  
     |  |     |              +----- Elliptoideus_sloatianus      
     |  |     |           +--+                                   
     |  |     |           |  |  +-- Elliptio_complanata          
     |  |  +--+           |  +--+                                
     |  |  |  |  +--------+     +-- Pleurobema_strodeanum        
     |  |  |  |  |        |                                      
     |  |  |  |  |        |  +----- Reginaia_ebenus              
     |  |  |  |  |        +--+                                   
     |  |  |  |  |           |  +-- Plectomerus_dombeyanus       
     |  |  |  +--+           +--+                                
     |  |  |     |              +-- Amblema_plicata              
     |  |  |     |                                               
     |  |  |     |              +-- Psoronaias_semigranosa       
     |  |  |     |  +-----------+                                
     +--+  |     |  |           +-- Popenaias_popeii             
        |  |     +--+                                            
        |  |        |  +----------- Obliquaria_reflexa           
        |  |        +--+                                         
        |  |           |  +-------- Cyrtonaias_tampicoensis      
        |  |           +--+                                      
        |  |              |  +----- Leaunio_lienosus             
        |  |              +--+                                   
        |  |                 |  +-- Lampsilis_cardium            
        |  |                 +--+                                
        |  |                    +-- Pachynaias_spheniopsis       
        |  |                                                     
        |  |                    +-- Chamberlainia_hainesiana     
        |  |  +-----------------+                                
        |  |  |                 +-- Sinohyriopsis_cumingii       
        |  |  |                                                  
        |  |  |                 +-- Gonidea_angulata             
        |  |  |     +-----------+                                
        |  |  |     |           +-- Lamprotula_cornuumlunae      
        |  |  |  +--+                                            
        |  +--+  |  |  +----------- Indopseudodon_kayinensis     
        |  |  |  |  +--+                                         
        |  |  |  |     |  +-------- Pilsbryoconcha_exilis        
        |  |  |  |     +--+                                      
        +--+  |  |        |  +----- Bineurus_anodontinum         
           |  |  |        +--+                                   
           |  |  |           |  +-- Pseudodon_vondembuschianus   
           |  +--+           +--+                                
           |     |              +-- Sundadontina_tanintharyiensis
           |     |                                               
           |     |           +----- Ensidens_ingallsianus        
           |     |     +-----+                                   
           |     |     |     |  +-- Hyriopsis_bialata            
           |     |     |     +--+                                
           |     |     |        +-- Rectidens_sumatrensis        
           |     +-----+                                         
           |           |        +-- Trapezoideus_foliaceus       
           |           |  +-----+                                
           |           |  |     +-- Physunio_superbus            
           |           +--+                                      
           |              |  +----- Yaukthwa_paiensis            
           |              +--+                                   
           |                 |  +-- Lens_contradens              
           |                 +--+                                
           |                    +-- Solenaia_emarginata          
           |                                                     
           |              +-------- Lanceolaria_lanceolata       
           |           +--+                                      
           |           |  |  +----- Unio_gibbus                  
           |           |  +--+                                   
           |           |     |  +-- Tchangsinaia_piscicula       
           |           |     +--+                                
           |  +--------+        +-- Nodularia_douglasiae         
           |  |        |                                         
           |  |        |        +-- Cristaria_plicata            
           |  |        |     +--+                                
           |  |        |     |  +-- Sinanodonta_woodiana         
           |  |        +-----+                                   
           |  |              |  +-- Anodonta_cygnea              
           +--+              +--+                                
              |                 +-- Pyganodon_grandis            
              |                                                  
              |                 +-- Trapezidens_dolichorhynchus  
              |  +--------------+                                
              |  |              +-- Lamellidens_savadiensis      
              |  |                                               
              +--+              +-- Leoparreysia_tavoyensis      
                 |  +-----------+                                
                 |  |           +-- Leoparreysia_olivacea        
                 |  |                                            
                 +--+           +-- Coelatura_choziensis         
                    |  +--------+                                
                    |  |        +-- Prisodontopsis_aviculaeformis
                    +--+                                         
                       |  +-------- Indonaia_caerulea            
                       +--+                                      
                          |  +----- Indochinella_pugio           
                          +--+                                   
                             |  +-- Scabies_phaselus             
                             +--+                                
                                +-- Harmandia_somboriensis       
 
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