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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 | Unionida | Unionoidea | Unionidae | Ambleminae | Lampsilini | Truncilla species Truncilla cognata (Lea, 1860): synonymy
11 specimens + 23 Genbank vouchers Unio cognatus Lea, 1860
 Lea, 1860. Proc. Acad. Nat. Sci. 12: 306.
Lea, 1860. Jour. Acad. Nat. Sci. 4 [O. 8]: 368 [50], pl. 65, fig. 193.
Type(s): HOLOTYPE (MONOTYPY) USNM_85004, Rio Salado, N. Leon, Mexico.
Plagiola (Amygdalonaias) cognata — Simpson (1900), Simpson (1914)
Unio (Lampsilis) cognatus — Martens (1900)
Truncilla cognata — Frierson (1927), Haas (1969), Turgeon et al. (1988), Williams et al. (1993), Howells et al. (1996), ... Hopper et al. (2023), Saxon et al. (2023), FMCS (2025), Cummings et al. (2025), Campbell & Lydeard (2026)
Truncilla donaciformis — R.I. Johnson (1999)
Truncilla cognatus — Haag (2012) | |
Unio donaciformis Sowerby, 1866
 ‘Lea’ Sowerby, 1866. Conch. Icon. 16: pl. 39, sp. 214.
(misidentified reference to Unio donaciformis Lea, 1828)
Plagiola (Amygdalonaias) cognata — Simpson (1900) | |
Taxonomic History (since 1900)Plagiola (Amygdalonaias) cognata — Simpson (1900), Simpson (1914)
Unio (Lampsilis) cognatus — Martens (1900)
Truncilla cognata — Frierson (1927), Haas (1969), Turgeon et al. (1988), Williams et al. (1993), Howells et al. (1996), ... Hopper et al. (2023), Saxon et al. (2023), FMCS (2025), Cummings et al. (2025), Campbell & Lydeard (2026)
Truncilla donaciformis — R.I. Johnson (1999)
Truncilla cognatus — Haag (2012)
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