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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 Inoue et al. (2020): cladograms
     publication summary | cladograms

Complete Citation

Inoue, K., J.L. Harris, C.R. Robertson, N.A. Johnson & C.R. Randklev. 2020. A comprehensive approach uncovers hidden diversity in freshwater mussels (Bivalvia: Unionidae) with the description of a novel species. Cladistics 36: 88-113. Available electronically.

Cladogram Figures

(click the figure number to see the cladogram)

Cladogram Figure 3
  +----------------------------------------------- Arcidens_confragosus    
  |                                                                        
  |                                            +-- Pustulosa_petrina       
  |  +-----------------------------------------+                           
  |  |                                         +-- Quadrula_quadrula       
--+  |                                                                     
  |  |                             +-------------- Parvaspina_collina      
  |  |                             |                                       
  |  |                             |           +-- Eurynia_dilatata        
  |  |  +--------------------------+  +--------+                           
  |  |  |                          |  |        +-- Hemistena_lata          
  +--+  |                          |  |                                    
     |  |                          +--+        +-- Pleurobema_clava        
     |  |                             |  +-----+                           
     |  |                             |  |     +-- Pleurobema_sintoxia     
     |  |                             +--+                                 
     |  |                                |  +----- Pleuronaia_dolabelloides
     |  |                                +--+                              
     |  |                                   |  +-- Fusconaia_flava         
     +--+                                   +--+                           
        |                                      +-- Fusconaia_subrotunda    
        |                                                                  
        |                                      +-- Amblema_plicata         
        |                                   +--+                           
        |                                   |  +-- Amblema_elliottii       
        |  +--------------------------------+                              
        |  |                                |  +-- Reginaia_ebenus         
        |  |                                +--+                           
        |  |                                   +-- Reginaia_rotulata       
        |  |                                                               
        +--+  +----------------------------------- Toxolasma_lividum       
           |  |                                                            
           |  |                          +-------- Potamilus_fragilis      
           |  |                          |                                 
           |  |  +-----------------------+     +-- Potamilus_ohiensis      
           +--+  |                       |  +--+                           
              |  |                       |  |  +-- Potamilus_amphichaenus  
              |  |                       +--+                              
              |  |                          |  +-- Potamilus_metnecktayi   
              |  |                          +--+                           
              |  |                             +-- Potamilus_purpuratus    
              +--+                                                         
                 |                       +-------- Ellipsaria_lineolata    
                 |  +--------------------+                                 
                 |  |                    |  +----- Truncilla_macrodon      
                 |  |                    +--+                              
                 |  |                       |  +-- Truncilla_donaciformis  
                 |  |                       +--+                           
                 |  |                          +-- Truncilla_cognata       
                 +--+                                                      
                    |  +-------------------------- Leaunio_lienosus        
                    |  |                                                   
                    |  |     +-------------------- Lampsilis_bracteata     
                    |  |     |                                             
                    |  |  +--+  +----------------- Lampsilis_fasciola      
                    |  |  |  |  |                                          
                    +--+  |  +--+  +-------------- Lampsilis_ornata        
                       |  |     |  |                                       
                       |  |     +--+           +-- Lampsilis_ovata         
                       |  |        |  +--------+                           
                       |  |        |  |        +-- Lampsilis_cariosa       
                       |  |        +--+                                    
                       |  |           |  +-------- Lampsilis_cardium__3    
                       +--+           +--+                                 
                          |              |  +----- Lampsilis_cardium__2    
                          |              +--+                              
                          |                 |  +-- Lampsilis_satura        
                          |                 +--+                           
                          |                    +-- Lampsilis_cardium__1    
                          |                                                
                          |                    +-- Lampsilis_higginsii     
                          |     +--------------+                           
                          |     |              +-- Ortmanniana_ligamentina 
                          +-----+                                          
                                |  +-------------- Lampsilis_teres         
                                |  |                                       
                                +--+           +-- Lampsilis_radiata       
                                   |  +--------+                           
                                   |  |        +-- Lampsilis_siliquoidea   
                                   +--+                                    
                                      |  +-------- Lampsilis_bergmanni     
                                      +--+                                 
                                         |  +----- Lampsilis_hydiana       
                                         +--+                              
                                            |  +-- Lampsilis_virescens     
                                            +--+                           
                                               +-- Lampsilis_straminea     
Cladogram Figure 4
  +-------------------------------------------------- Arcidens_confragosus    
  |                                                                           
  |                                               +-- Pustulosa_petrina       
  |  +--------------------------------------------+                           
--+  |                                            +-- Quadrula_quadrula       
  |  |                                                                        
  |  |                                            +-- Reginaia_ebenus         
  |  |  +-----------------------------------------+                           
  +--+  |                                         +-- Reginaia_rotulata       
     |  |                                                                     
     |  |                             +-------------- Parvaspina_collina      
     |  |                             |                                       
     |  |                             |           +-- Eurynia_dilatata        
     |  |  +--------------------------+  +--------+                           
     +--+  |                          |  |        +-- Hemistena_lata          
        |  |                          |  |                                    
        |  |                          +--+        +-- Pleurobema_clava        
        |  |                             |  +-----+                           
        |  |                             |  |     +-- Pleurobema_sintoxia     
        |  |                             +--+                                 
        |  |                                |  +----- Pleuronaia_dolabelloides
        +--+                                +--+                              
           |                                   |  +-- Fusconaia_flava         
           |                                   +--+                           
           |                                      +-- Fusconaia_subrotunda    
           |                                                                  
           |                                      +-- Amblema_plicata         
           |  +-----------------------------------+                           
           |  |                                   +-- Amblema_elliottii       
           |  |                                                               
           +--+  +----------------------------------- Toxolasma_lividum       
              |  |                                                            
              |  |  +-------------------------------- Ellipsaria_lineolata    
              +--+  |                                                         
                 |  |                          +----- Truncilla_cognata       
                 |  |  +-----------------------+                              
                 |  |  |                       |  +-- Truncilla_macrodon      
                 +--+  |                       +--+                           
                    |  |                          +-- Truncilla_donaciformis  
                    |  |                                                      
                    |  |                    +-------- Potamilus_fragilis      
                    |  |                    |                                 
                    +--+  +-----------------+     +-- Potamilus_ohiensis      
                       |  |                 |  +--+                           
                       |  |                 |  |  +-- Potamilus_amphichaenus  
                       |  |                 +--+                              
                       |  |                    |  +-- Potamilus_metnecktayi   
                       |  |                    +--+                           
                       |  |                       +-- Potamilus_purpuratus    
                       +--+                                                   
                          |  +----------------------- Leaunio_lienosus        
                          |  |                                                
                          |  |     +----------------- Lampsilis_bracteata     
                          |  |     |                                          
                          |  |  +--+              +-- Lampsilis_ornata        
                          |  |  |  |  +-----------+                           
                          +--+  |  |  |           +-- Lampsilis_fasciola      
                             |  |  +--+                                       
                             |  |     |  +----------- Lampsilis_ovata         
                             |  |     +--+                                    
                             |  |        |  +-------- Lampsilis_cardium__3    
                             |  |        +--+                                 
                             +--+           |  +----- Lampsilis_cardium__2    
                                |           +--+                              
                                |              |  +-- Lampsilis_satura        
                                |              +--+                           
                                |                 +-- Lampsilis_cardium__1    
                                |                                             
                                |     +-------------- Lampsilis_teres         
                                |     |                                       
                                |     |           +-- Lampsilis_higginsii     
                                +-----+  +--------+                           
                                      |  |        +-- Ortmanniana_ligamentina 
                                      |  |                                    
                                      +--+        +-- Lampsilis_radiata       
                                         |  +-----+                           
                                         |  |     +-- Lampsilis_siliquoidea   
                                         |  |                                 
                                         +--+     +-- Lampsilis_hydiana       
                                            |  +--+                           
                                            |  |  +-- Lampsilis_bergmanni     
                                            +--+                              
                                               |  +-- Lampsilis_virescens     
                                               +--+                           
                                                  +-- Lampsilis_straminea     
Cladogram Figure 5
  +-------------------- Truncilla_macrodon   
  |                                          
  |     +-------------- Lampsilis_bracteata  
  |     |                                    
  |  +--+           +-- Lampsilis_ornata     
--+  |  |  +--------+                        
  |  |  |  |        +-- Lampsilis_fasciola   
  |  |  +--+                                 
  |  |     |  +-------- Lampsilis_ovata      
  |  |     +--+                              
  |  |        |  +----- Lampsilis_cariosa    
  +--+        +--+                           
     |           |  +-- Lampsilis_cardium    
     |           +--+                        
     |              +-- Lampsilis_satura     
     |                                       
     |  +-------------- Lampsilis_higginsii  
     |  |                                    
     +--+  +----------- Lampsilis_teres      
        |  |                                 
        |  |        +-- Lampsilis_radiata    
        +--+  +-----+                        
           |  |     +-- Lampsilis_siliquoidea
           |  |                              
           +--+     +-- Lampsilis_hydiana    
              |  +--+                        
              |  |  +-- Lampsilis_bergmanni  
              +--+                           
                 |  +-- Lampsilis_straminea  
                 +--+                        
                    +-- Lampsilis_virescens  
 
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