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Taxonomy

all genera

Unionidae

Margaritiferidae

Hyriidae

Etheriidae

Mycetopodidae

Iridinidae


Species & Genus Richness by
Taxonomy

Geography

Summary

North America

Central America

South America

Afrotropics

North Eurasia

East Asia

Australasia


Species Richness & Endemism by
Geography

Data last updated
Mon 1 Dec 2025

Publication Pfeiffer et al. (2016): cladograms

publication summary | cladograms

Complete Citation

Pfeiffer, J.M., N.A. Johnson, C.R. Randklev, R.G. Howells & J.D. Williams. 2016. Generic reclassification and species boundaries in the rediscovered freshwater mussel ‘Quadrula’ mitchelli (Simpson in Dall, 1896). Conservation Genetics 17(2): 279-292. Available electronically.

Cladogram Figures

(click the figure number to see the cladogram)

Cladogram Figure 2
  +-------------------------------------- Utterbackiana_suborbiculata
  |                                                                  
  |                                   +-- Amblema_plicata            
  |                                +--+                              
  |                                |  +-- Amblema_neislerii          
  |  +-----------------------------+                                 
--+  |                             |  +-- Reginaia_rotulata          
  |  |                             +--+                              
  |  |                                +-- Reginaia_ebenus            
  |  |                                                               
  |  |                                +-- Cyrtonaias_berlandierii    
  |  |                          +-----+                              
  |  |                          |     +-- Glebula_rotundata          
  +--+                          |                                    
     |  +-----------------------+     +-- Lampsilis_teres            
     |  |                       |  +--+                              
     |  |                       |  |  +-- Leaunio_lienosus           
     |  |                       +--+                                 
     |  |                          |  +-- Truncilla_macrodon         
     |  |                          +--+                              
     |  |                             +-- Potamilus_fragilis         
     +--+                                                            
        |  +----------------------------- Elliptoideus_sloatianus    
        |  |                                                         
        |  |              +-------------- Uniomerus_declivis         
        |  |  +-----------+                                          
        |  |  |           |  +----------- Quadrula_quadrula          
        |  |  |           +--+                                       
        +--+  |              |  +-------- Quadrula_verrucosa         
           |  |              +--+                                    
           |  |                 |  +----- Pustulosa_pustulosa        
           |  |                 +--+                                 
           |  |                    |  +-- Pustulosa_petrina          
           |  |                    +--+                              
           +--+                       +-- Cyclonaias_tuberculata     
              |                                                      
              |                       +-- Elliptio_fumata            
              |  +--------------------+                              
              |  |                    +-- Elliptio_crassidens        
              |  |                                                   
              |  |  +-------------------- Parvaspina_collina         
              |  |  |                                                
              |  |  +-------------------- Plethobasus_cyphyus        
              +--+  |                                                
                 |  |                 +-- Hemistena_lata             
                 |  +-----------------+                              
                 |  |                 +-- Eurynia_dilatata           
                 |  |                                                
                 |  |              +----- Pleurobema_riddellii       
                 +--+           +--+                                 
                    |           |  |  +-- Pleurobema_sintoxia        
                    |           |  +--+                              
                    |  +--------+     +-- Pleurobema_cordatum        
                    |  |        |                                    
                    |  |        |  +----- Pleuronaia_dolabelloides   
                    |  |        |  |                                 
                    |  |        +--+  +-- Pleurobema_pyriforme       
                    |  |           |  |                              
                    +--+           +--+-- Pleurobema_strodeanum      
                       |              |                              
                       |              +-- Pleurobema_clava           
                       |                                             
                       |  +-------------- Fusconaia_askewi           
                       |  |                                          
                       |  |           +-- Fusconaia_mitchelli        
                       +--+  +--------+                              
                          |  |        +-- Fusconaia_iheringi         
                          |  |                                       
                          +--+        +-- Fusconaia_escambia         
                             |  +-----+                              
                             |  |     +-- Fusconaia_burkei           
                             +--+                                    
                                |  +----- Fusconaia_flava__2         
                                +--+                                 
                                   |  +-- Fusconaia_cerina           
                                   +--+                              
                                      +-- Fusconaia_flava__1         
 
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