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 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=nomsp&id=1027

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Unionoida | Unionoidea | Unionidae | Ambleminae | Lampsilini | Epioblasma obliquata

nominal species Unio ridibundus Say, 1829

Say, 1829, New Harm. Dissem. 2(20): 308, sp. 6.
Say, 1830, Amer. Conch. 1: pl. 5, upper fig.
Say, 1858, [in] Binney, Compl. Writings T. Say: 131, 154.

= Epioblasma obliquata

Taxonomic Opinions

+ Epioblasma obliquata obliquata (Rafinesque, 1820) — Watters et al., 2009
+ Epioblasma obliquata (Rafinesque, 1820) — Williams et al., 2008
+ Epioblasma obliquata Rafinesque, 1820 — Parmalee & Bogan, 1998
+ Plagiola (Pilea) obliquata (Rafinesque, 1820) — R.I. Johnson, 1978
+ Dysnomia sulcata (Lea, 1829) — Burch, 1975
+ Dysnomia (Pilea) sulcata (Lea, 1829) — Haas, 1969
= Plagiola ridibundus Say, 1831 — Morrison, 1969
+ Dysnomia (Pilea) sulcata (Lea, 1829) — Frierson, 1927
+ Dysnomia (Scalenilla) sulcata (Lea, 1829) — Ortmann & Walker, 1922
+ Truncilla (Scalenaria) sulcata (Lea, 1829) — Simpson, 1914
+ Truncilla (Scalenaria) sulcata Lea — Simpson, 1900
+ Margaron (Unio) sulcatus (Lea) — Lea, 1870
= Unio ridibundus Say, 1829 — Reeve, 1864
= Unio ridibundus Say — Küster, 1862
+ Unio obliquata (Raf.) — Conrad, 1853
+ Scalenaria obliquata (Raf.) — Agassiz, 1852
+ Margaron (Unio) sulcatus (Lea) — Lea, 1852
+ Unio sulcatus Lea — Hanley, 1843
+ Margarita (Unio) sulcatus Lea. Eat. Say. — Lea, 1838
+ Margarita (Unio) sulcatus (Lea, 1829) — Lea, 1836
+ Unio obliquatus Raf. — Ferussac, 1835
= Unio ridibundus — Jay, 1835

Page updated: 11:31:55 Mon 08 Sep 2025