Bivalvia | Unionida | Unionoidea | Unionidae | Ambleminae | Popenaiadini

genus Sphenonaias Crosse & Fischer, 1894: synonymy

3 Recent freshwater species (3 total species)

Synonymy

Sphenonaias Fischer & Crosse, 1894

Fischer & Crosse, 1894. Miss. Sci. Mexique, Rech. Zool. 2(15): 557.
(intro'd as sub-gen. of Unio Retzius, 1788)
Type species: Unio liebmanni Philippi, 1847 (orig. desig.) = Sphenonaias liebmanni

Taxonomic History (since 1900)

The Taxonomic History lists the ways authors have classified the species currently assigned to Sphenonaias, since 1900.

Unio (sec. Elliptio) — Simpson (1900), Simpson (1914)
Unio (Elliptio) — Martens (1900)
Unio (Sphenonaias) — Martens (1900)
Unio — Pilsbry (1904), Contreras-Arquieta (2000)
Psoronaias — Frierson (1927)
Elliptio (Sphenonaias) — Frierson (1927)
Elliptio (Barynaias) — Frierson (1927), Haas (1929), Haas (1930)
Barynaias — Haas (1969), Graf & Cummings (2007), Bogan (2010), Graf & Cummings (2021), Czaja et al. (2023)
Nephronaias (Sphenonaias) — Haas (1969), Haas (1969)
Elliptio — Contreras-Arquieta (2000)
Sphenonaias — Graf & Cummings (2007), Bogan (2010), Pfeiffer et al. (2019), Graf & Cummings (2021), Czaja et al. (2023), Cummings et al. (2025)