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Unio scamnatus Morelet, 1849

Morelet, 1849. Test. Nov. 1: 30.
Type(s): LECTOTYPE BMNH_93-2-4-1976 (by R.I. Johnson, 1971: 92), Rio Taco Taco, Cuba.

Nephronaias scamnatus — Simpson (1900), Ihering (1901)
Unio (Simonaias) scamnatus — Martens (1900)
Nephronaias scamnata — Simpson (1914), Graf & Cummings (2007), Bogan (2010), IUCN (2011), Graf & Cummings (2021), Cummings et al. (2025)
Elliptio (Nephronaias) scamnatus — Frierson (1927), Haas (1929)
Nephronaias (s.s.) scamnata — Haas (1969), Johnson (1981)

Unio gundlachi Sowerby, 1866

‘Dunker’ Sowerby, 1866. Conch. Icon. 16: pl. 46, sp. 248.
(misidentified reference to Unio gundlachi Dunker, 1858)

Nephronaias scamnatus — Simpson (1900)
Unio (Simonaias) proclinatus — Martens (1900)
Nephronaias scamnata — Simpson (1914)
Elliptio (Nephronaias) scamnatus — Frierson (1927)

Unio (Simonaias) proclinatus Martens, 1900

Martens, 1900. Biol. Centr.-Amer., Moll.: 508.
Type(s): SYNTYPES ZMB_33793, Taco fl., Cuba.

Unio (Simonaias) proclinatus — Martens (1900)
Nephronaias scamnata — Simpson (1914), Cummings et al. (2025)
Elliptio (Nephronaias) scamnatus — Frierson (1927), Haas (1929)
Nephronaias (s.s.) scamnata — Haas (1969), Johnson (1981)

Unio bitumen Cooke, 1919

Cooke, 1919. unknown publication: 130, pl. 9, figs. 3a-c.

Nephronaias (s.s.) scamnata — Johnson (1981)

Unio scamnatus Dunker, 1858

‘Morelet’ Dunker, 1858. Malak. Blatt. 5: 229.
(reference to Unio scamnatus Morelet, 1849)

Unio (Simonaias) proclinatus — Martens (1900)