nominal species Anodonta gigantea Lea, 1838
 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.
= Pyganodon grandis Taxonomic Opinions
+ Pyganodon grandis grandis (Say, 1829) — (Watters et al., 2009)
+ Pyganodon grandis (Say, 1829) — (Williams et al., 2008)
+ Pyganodon grandis (Say, 1829) — (Parmalee & Bogan, 1998)
+ Pyganodon grandis (Say) — (Strayer & Jirka, 1997)
+ Anodonta grandis Say, 1829 — (Howells et al., 1996)
+ Pyganodon grandis (Say, 1829) — (Vidrine, 1993)
+ Anodonta grandis grandis Say, 1829 — (R.I. Johnson, 1980)
+ Anodonta grandis grandis Say, 1829 — (Burch, 1975)
+ Anodonta (Pyganodon) grandis grandis Say, 1829 — (Haas, 1969)
= Anodonta gigantea Lea, 1834 [sic] — (F.C. Baker, 1928)
+ Anodonta (Pyganodon) grandis Say, 1829 — (Frierson, 1927)
+ Anodonta grandis Say — (Ortmann, 1925)
= Anodonta grandis var. gigantea Lea, 1834 [sic] — (Simpson, 1914)
= Anodonta grandis var. gigantea Lea, 1834 [sic] — (Simpson, 1900)
+ Unio (Anodonta) grandis (Say, 1829) — (Call, 1900)
+ Anodonta grandis Say, 1829 — (Call, 1895)
= Anodonta gigantea Lea, 1838 — (Clessin, 1888)
= Anodon giganteus (Lea, 1838) — (Sowerby, 1870)
= Margaron (Anodonta) gigantea (Lea) — (Lea, 1870)
= Leila gigantea Lea — (H. Adams, 1866)
= Anodonta gigantea Lea — (Adams & Adams, 1857)
= Anodonta gigantea Lea — (Conrad, 1853)
= Margaron (Anodonta) gigantea (Lea) — (Lea, 1852)
= Anodonta gigantea Lea — (Hanley, 1843)
= Margarita (Anodonta) gigantea (Lea, 1838) — (Lea, 1836)
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