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Species & Genus Richness by
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Species Richness & Endemism by
Geography

Data last updated
Mon 1 Dec 2025

Bivalvia | Unionoida | Unionoidea | Unionidae | Unioninae | Anodontini | Alasmidontina

genus Pyganodon Crosse & Fischer, 1894: species

2 available nominal genus synonyms (3 total synonyms) | cladomics

Included Species

Decorative image of a representative of Pyganodon cataracta

Pyganodon cataracta (Say, 1817)

syonymy (12 available, 19 total) | specimens (6 + 1 Genbank voucher)

Range: New Brunswick, Canada south to the Altamaha River, Georgia, USA; and in the Apalachicola River, USA. (North America)

Genbank sequences: 16S, 28S, COI, COII M-type, ITS1, ND1, other
IUCN Red List: Least Concern
NatureServe: G5
other links: MolluscaBase

Decorative image of a representative of Pyganodon fragilis

Pyganodon fragilis (Lamarck, 1819)

syonymy (8 available, 12 total) | specimens (7)

Range: Northern Atlantic Slope, Canada. (North America)

Genbank sequences: 16S, COI, COI M-type, COII M-type, ITS1
IUCN Red List: Least Concern
NatureServe: G4
other links: MolluscaBase

Decorative image of a representative of Pyganodon gibbosa

Pyganodon gibbosa (Say, 1824)

syonymy (1 available, 1 total) | specimens (0)

Range: Altamaha River, Georgia, USA. (North America)

IUCN Red List: Near Threatened
NatureServe: G3
other links: MolluscaBase

Decorative image of a representative of Pyganodon globosa

Pyganodon globosa (Lea, 1841)

syonymy (4 available, 8 total) | specimens (28)

Range: Central and southern Mexico (Central America)

Pyganodon grandis (Say, 1829)

syonymy (44 available, 68 total) | specimens (41 + 1 Genbank voucher)

Range: Widespread in interior North America, from the Rio Grande to the Arctic. Invading east into the Atlantic Slope and west into the Pacific. (North America)

Genbank sequences: 16S, 16S M-type, 28S, 5.8S, COI, COI M-type, COII, COII M-type, ITS1, mtGenome, mtGenome M-type, ND1, other, SRA
IUCN Red List: Least Concern
NatureServe: G5
other links: MolluscaBase

Decorative image of a representative of Pyganodon lacustris

Pyganodon lacustris (Lea, 1857)

syonymy (1 available, 2 total) | specimens (1)

Range: Interior and Great Lakes basins in Minnesota, Wisconsin, and Michigan, USA; also Quebec, Canada. (North America)

Genbank sequences: COI, COI M-type, COII M-type, ND1, other
IUCN Red List: Least Concern
NatureServe: G4
other links: MolluscaBase

 
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