|                Page last updated 
                  Sun 07 Sep 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! 
The synonymy list the nominal family-group level taxa circumscribed within the valid taxon. The MUSSEL Project Database has moved to a new server, with a new URL! The new address for this page is: https://musselpdb.org/db.php?ty=validfam_syn&id=Trigonioididae 
Search the database pages:
 
 
   |  
  | 
 Bivalvia | Unionoida | Trigonioidoidea family TRIGONIOIDIDAE Cox, 1952: nominal family-group taxa      1 subfamily, 4 genera 
  TRIGONIOIDIDAE Cox, 1952
     Cox, 1952, unknown publication: ??.
 Type genus: Trigonioides Kobayashi & Suzuki, 1936 = Trigonioides    |  AMERICUNIONIDAE Guo, 1986
     Guo, 1986, Yunnan Geol. 5(4): 342, 347.
 Type genus: Americunio Guo, 1986 = Americunio  |   
   |  
  Page updated: 08:15:13 Sun 07 Sep 2025  |  
 
               |