Bivalvia | Unionida | Unionoidea | Unionidae | Gonideinae | Rectidentini | Rectidentina
2 Recent freshwater species (2 total species)
Haas, 1911. Conch. Cab. 9 (pt. 2, h. 43): pl. 17.
Haas, 1913. Conch. Cab. 9 (pt. 2, h. 48): 167.
Haas, 1913. Nachr. Bl. Dtsch. Malak. Ges. 45: 34.
Type species: Unio orientalis Lea, 1840 (orig. desig.) = Elongaria orientalis
Haas, 1913. Conch. Cab. 9 (pt. 2, h. 48): 169.
(intro'd as sub-gen. of Elongaria Haas, 1911)
Type species: Unio trompi Drouët & Chaper, 1892 (monotypy) = Elongaria trompi
The Taxonomic History lists the ways authors have classified the species currently assigned to Elongaria, since 1900.
Nodularia (s.s.) — Simpson (1900), Simpson (1914)
Unio (sec. Lymnium) — Simpson (1900), Simpson (1914)
Rectidens — Frierson (1911), Simpson (1914), Modell (1942)
Elongaria (s.s.) — Haas (1913), Thiele (1934), Haas (1969), Haas (1969)
Elongaria (sec. Nannonaia) — Haas (1913), Thiele (1934)
Elongaria — Haas (1940), van Benthem Jutting (1953), Graf & Cummings (2007), Bogan (2010), Affandi et al. (2013), Zieritz et al. (2018), Zieritz et al. (2020), Pfeiffer et al. (2021), Graf & Cummings (2021), Sahidin et al. (2021), Zieritz et al. (2024)
Elongaria (Nannonaia) — Haas (1969), Haas (1969)