| 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 | Unioninae | Unionini | Nodularia douglasiae nominal species Unio verrucifer Martens, 1894 = Nodularia douglasiae Taxonomic Opinions+ Nodularia douglasiae (Griffith & Pidgeon, 1833) — Lopes-Lima et al., 2020 + Nodularidia douglasiae (Griffith & Pidgeon, 1833) — He & Zhuang, 2013 = Unio douglasiae verrucifer von Martens, 1894 — Haas, 1969 = Nodularia (s.s.) verrucifera (von Martens, 1894) — Simpson, 1914 = Nodularia (s.s.) verrucifera (von Martens, 1894) — Haas, 1911 = Unio (Nodularia) verrucifer Marts. — Martens, 1905 +    — Simpson, 1900 |