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 gigantea Lea, 1838
Anodonta gigantea Lea, 1838 = Pyganodon grandis
Lea, 1836. Synopsis Fam. Naiades: 52. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 1 [1], pl. 1, fig. 1.
Type(s): HOLOTYPE (MONOTYPY) USNM_86659, Port Gibson, Mississippi.
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: 206.
+ Pyganodon grandis (Say) — Strayer & Jirka, 1997: 98.
+ Anodonta grandis Say, 1829 — Howells et al., 1996: 36.
+ Pyganodon grandis (Say, 1829) — Vidrine, 1993: 16.
+ Anodonta grandis grandis Say, 1829 — R.I. Johnson, 1980: 92.
+ Anodonta grandis grandis Say, 1829 — Burch, 1975: 164.
+ Anodonta (Pyganodon) grandis grandis Say, 1829 — Haas, 1969: 364.
= Anodonta gigantea Lea, 1834 [sic] — F.C. Baker, 1928: 161, pl. 62, fig. 4; pl. 65, fig. 3.
+ Anodonta (Pyganodon) grandis Say, 1829 — Frierson, 1927: 14.
+ Anodonta grandis Say — Ortmann, 1925: 344.
= Anodonta grandis gigantea Lea, 1834 — Ortmann, 1918: 558.
= Anodonta grandis var. gigantea Lea, 1834 [sic] — Simpson, 1914: 420.
= Anodonta grandis var. gigantea Lea — Ortmann, 1909: 195.
= Anodonta grandis var. gigantea Lea, 1834 [sic] — Simpson, 1900: 643.
+ Unio (Anodonta) grandis (Say, 1829) — Call, 1900: 532.
+ Anodonta grandis Say, 1829 — Call, 1895: 61.
= Anodonta gigantea Lea, 1838 — Clessin, 1888: 171.
= Anodonta gigantea Lea — B.H. Wright, 1888: [6].
= Anodon giganteus (Lea, 1838) — Sowerby, 1870: pl. 37, sp. 152.
= Margaron (Anodonta) gigantea (Lea) — Lea, 1870: 81.
= Leila gigantea Lea — H. Adams, 1866: 444.
= Anodonta gigantea Lea — Adams & Adams, 1857: 502.
= Anodonta gigantea Lea — Conrad, 1853: 264.
= Margaron (Anodonta) gigantea (Lea) — Lea, 1852: 50.
= Anodonta gigantea Lea — Hanley, 1843: 219.
= Margarita (Anodonta) gigantea Lea — Lea, 1838: 31.
= Margarita (Anodonta) gigantea (Lea, 1838) — Lea, 1836: 52.
