MUSSELp
 
MUSSELpdb
  Introduction
Browse
d'basing
 
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
 
 

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!

Search the database pages:

Publication Araujo et al. (2018): cladograms
     publication summary | cladograms

Complete Citation

Araujo, R., D. Buckley, K.-O. Nagel, R. García-Jiménez & A. Machordom. 2018. Species boundaries, geographic distribution and evolutionary history of the Western Palearctic freshwater mussels Unio (Bivalvia: Unionidae). Journal of the Linnean Society, Zoology 182(2): 275-299. Available electronically.

Cladogram Figures

(click the figure number to see the cladogram)

Cladogram Figure 1
  +-------------------------- Pseudunio_auricularius
  |                                                 
  |                    +----- Anodonta_anatina      
--+  +-----------------+                            
  |  |                 |  +-- Pyganodon_grandis     
  |  |                 +--+                         
  |  |                    +-- Alasmidonta_marginata 
  +--+                                              
     |  +-------------------- Nodularia_douglasiae  
     |  |                                           
     |  |                 +-- Unio_durieui          
     +--+  +--------------+                         
        |  |              +-- Unio_gibbus           
        |  |                                        
        +--+  +-------------- Unio_tumidus          
           |  |                                     
           |  |     +-------- Unio_tumidiformis     
           |  |  +--+                               
           +--+  |  |  +----- Unio_desectus         
              |  |  +--+                            
              |  |     |  +-- Unio__1               
              |  |     +--+                         
              +--+        +-- Unio_ionicus          
                 |                                  
                 |        +-- Unio_delphinus        
                 |     +--+                         
                 |     |  +-- Unio_foucauldianus    
                 |     |                            
                 +-----+  +-- Unio_pictorum         
                       |  |                         
                       |  +-- Unio_elongatulus      
                       |  |                         
                       +--+-- Unio_mancus           
                          |                         
                          +-- Unio_ravoisieri       
                          |                         
                          +-- Unio__2
 
NSF icon MUSSEL icon
"Making the world a better place, one mollusk at a time."