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 | Alasmidonta marginata
nominal species Alasmodonta truncata ‘Say, in lit.’ of Authors
Alasmodonta truncata ‘Say, in lit.’ of Authors = Alasmidonta marginata
‘Say, in lit.’ of Authors.
Lea, 1836. Synopsis Fam. Naiades: 44.
Lea, 1838. Synopsis Fam. Naiades: 27.
Agassiz, 1852. Arch. Naturg. 18(1): 46.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 262.
(intro'd as syn of Alasmidonta marginata Say, 1818)
Taxonomic Opinions
+ Alasmidonta marginata Say, 1818 — Watters et al., 2009: 41.
+ Alasmidonta marginata Say, 1818 — Williams et al., 2008: 116.
+ Alasmidonta marginata Say, 1819 — Parmalee & Bogan, 1998: 56.
+ Alasmidonta (Decurambis) marginata (Say, 1819) — Haas, 1969: 394.
+ Decurambis marginata (Say, 1818) — Frierson, 1927: 21.
+ Alasmidonta (Rugifera) marginata Say, 1819 — Simpson, 1914: 505.
+ Alasmidonta (Rugifera) truncata (Wright, B.H., 1898) — Simpson, 1900: 671.
+ Margaron (Margaritana) marginata (Say) — Lea, 1870: 67.
+ Alasmodonta marginata (Say) — Conrad, 1853: 262.
= Alasmodonta [sic] truncata Say — Agassiz, 1852: 46.
+ Margaron (Margaritana) marginata (Say) — Lea, 1852: 42.
+ Margarita (Margaritana) marginata Lea — Lea, 1838: 27.
+ Margarita (Margaritana) marginata (Say, 1819) — Lea, 1836: 44.
