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!
Bivalvia | ... | Ambleminae | Lampsilini | Ptychobranchus foremanianus nominal species Unio trinacrus Lea, 1861  Lea, 1861. Proc. Acad. Nat. Sci. 13: 59.
Lea, 1862. Jour. Acad. Nat. Sci. 5 [O. 8]: 86 [90], pl. 12, fig. 235.
Type(s): HOLOTYPE USNM_84445, Coosa R., Alabama.
= Ptychobranchus foremanianus Taxonomic Opinions+ Ptychobranchus foremanianus (Lea, 1842) — Williams et al., 2008 + Ptychobranchus greeni (Conrad, 1834) — Parmalee & Bogan, 1998 + Ptychobranchus greeni (Conrad, 1834) — Burch, 1975 + Ptychobranchus (s.s.) foremanianum (Lea, 1842) — Haas, 1969 + Ptychobranchus (s.s.) foremanianum (Lea, 1842) — Frierson, 1927 = Ptychobranchus trinacrium [sic] (Lea, 1861) — Simpson, 1914 = Ptychobranchus trinacrus (Lea, 1861) — Simpson, 1900 = Unio trinacrus Lea — B.H. Wright, 1888 = Margaron (Unio) trinacrus (Lea) — Lea, 1870 = Unio trinacris [sic] Lea, 1861 — Sowerby, 1868
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