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Data last updated
Mon 1 Dec 2025

Publication Say (1818): summary

publication summary

Full Citation

Say, T. 1818. Description of a new genus of fresh water bivalve shells. Journal of the Academy of Natural Sciences 1(11): 459-460. Available electronically.

Attributed Nominal Genera

Alasmidonta Say, 1818

Say, 1818. Jour. Acad. Nat. Sci. 1(11): 459.
Say, 1819. Nich. Encyc. 4: unpaginated.
(new name for Monodonta Say, 1817; renamed Alasmodonta Say, 1819)
Type species: Unio undulata Say, 1817 = Alasmidonta undulata

Anadonta Say, 1818

‘Lamarck’ of Authors.
Say, 1818. Jour. Acad. Nat. Sci. 1(11): 459.
Goldfuss, 1820. Handb. Zool. 1: 611.
Ravenel, 1834. Cat. Rec. Shells: 7.
Grimm, 1876. Kaspinskoe Fauna: 143.
Pavan-Kumar et al., 2022. Mol. Biol. Rep. 49: Figure S5.
(error for Anodonta Lamarck, 1799)
Type species: Mytilus cygneus Linnaeus, 1758 = Anodonta cygnea

Attributed Nominal Species

Alasmidonta marginata Say, 1818 = Alasmidonta marginata

Say, 1818. Jour. Acad. Nat. Sci. 1(11): 459.
Say, 1819. Nich. Encyc. 4: sp. 1.
Say, 1858. [in] Binney, Compl. Writings T. Say: 62.

Taxonomic Opinions

Alasmidonta marginata Say, 1819

Alasmidonta undulata (Say, 1817)

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