Bivalvia | Unionida | Unionoidea | Unionidae | Gonideinae | Rectidentini | Rectidentina

genus Rectidens Simpson, 1900: synonymy

3 Recent freshwater species (3 total species)

Synonymy

Rectidens Simpson, 1900

Simpson, 1900. Proc. U.S. Nat. Mus. 22: 853.
Simpson, 1914. Descr. Cat. Naiades: 1157.
Type species: Unio prolongatus Drouët, 1894 (orig. desig.) = Rectidens sumatrensis

Elongaria Haas, 1911

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.) = Rectidens orientalis

Taxonomic History (since 1900)

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

Nodularia (s.s.) — Simpson (1900)
Rectidens — Simpson (1900), Frierson (1911), Simpson (1914), Haas (1914), Thiele (1934), ... Dai et al. (2025), Chen et al. (2025), Zieritz et al. (2026), Campbell & Lydeard (2026), Wu et al. (2026)
Unio (sec. Lymnium) — Simpson (1900), Simpson (1914)
Unio — Martens (1900), Preston (1912)
Elongaria (s.s.) — Haas (1913), Thiele (1934), Haas (1969), Haas (1969)
Elongaria — Haas (1940), van Benthem Jutting (1953), Graf & Cummings (2007), Bogan (2010), Affandi et al. (2013), Zieritz et al. (2018), Pfeiffer et al. (2021), Graf & Cummings (2021), Sahidin et al. (2021)