| Page last updatedWed 1 October 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! 
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 Bivalvia | ... | Unionoidea | Unionidae | Gonideinae | Gonideini | Ptychorhynchus murinum nominal species Unio compressus Heude, 1877 = Ptychorhynchus murinum Taxonomic Opinions+ Ptychorhynchus murinum (Heude, 1883) — He & Zhuang, 2013 + Ptychorhynchus murinum (Heude, 1883) — Haas, 1969 + Ptychorhynchus murinum (Heude, 1883) — Haas, 1924 + Ptychorhynchus murinum (Heude, 1883) — Simpson, 1914 + Ptychorhynchus murinus (Heude, 1883) — Simpson, 1900 + Unio douglasiae var. subpressus Heude — Heude, 1885 = Unio compressus Heude — Heude, 1877 |