MUSSELpdb
Taxonomy
Species & Genus Richness of
freshwater mussels
by Taxonomy
Species & Genus Richness of
freshwater bivalves
by Family
Geography
Species Richness & Endemism of
freshwater mussels
by Geography
Data last updated
Mon 2 March 2026
Bivalvia | ... | Unionidae | Unioninae | Anodontini | Alasmidontina | Pyganodon grandis
nominal species Anodonta opaca Lea, 1852
Anodonta opaca Lea, 1852 = Pyganodon grandis
Lea, 1852. Trans. Amer. Phil. Soc. 10 [O. 5]: 285, pl. 25, fig. 46.
Lea, 1852. Proc. Amer. Phil. Soc. 5: 252. [nomen nudum]
Type(s): HOLOTYPE USNM_128835, New Orleans.
Taxonomic Opinions
+ Pyganodon grandis grandis (Say, 1829) — Watters et al., 2009: 260.
+ Pyganodon grandis (Say, 1829) — Williams et al., 2008: 638.
+ Pyganodon grandis (Say, 1829) — Parmalee & Bogan, 1998: 207.
+ Anodonta grandis Say, 1829 — Howells et al., 1996: 36.
+ Pyganodon grandis (Say, 1829) — Vidrine, 1993: 16.
+ Anodonta grandis grandis Say, 1829 — Oesch, 1984: 40.
+ Anodonta grandis grandis Say, 1829 — R.I. Johnson, 1980: 92.
+ Anodonta (Pyganodon) grandis grandis Say, 1829 — Haas, 1969: 364.
+ Anodonta (Pyganodon) grandis Say, 1829 — Frierson, 1927: 15.
+ Anodonta grandis Say — Utterback, 1915: 263.
= Anodonta opaca Lea, 1852 — Simpson, 1914: 428.
= Anodonta opaca Lea, 1852 — Simpson, 1900: 645.
= Anodonta opaca Lea — Call, 1895: 64.
= Anodonta opaca Lea — B.H. Wright, 1888: [7].
= Margaron (Anodonta) opaca (Lea) — Lea, 1870: 80.
+ Anodon ovata (Lea, 1838) — Sowerby, 1869: pl. 22, sp. 85.
= Anodonta opaca Lea — Adams & Adams, 1857: 503.
= Anodonta opaca Lea — Hanley, 1856: 387.
= Anodonta opaca Lea, 1852 — Conrad, 1853: 264.
= Margaron (Anodonta) opaca (Lea) — Lea, 1852: 50.
