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Data last updated
Mon 1 Dec 2025
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Bivalvia
| Unionoida
| Unionoidea
| Unionidae
| Ambleminae
| Quadrulini
| Quadrulina
genus Cyclonaias Pilsbry in Ortmann & Walker, 1922: synonymy1 Recent freshwater species (1 total species)
Synonymy
Rotundaria Agassiz, 1852 ‘Rafinesque’ of Authors.
Agassiz, 1852. Arch. Naturg. 18(1): 48.
Simpson, 1900. Proc. U.S. Nat. Mus. 22: 765.
Ortmann, 1909. Ann. Carnegie Mus. 5: 201.
Ortmann, 1910. Nautilus 23(11): 140.
Ortmann, 1912. Ann. Carnegie Mus. 8: 257.
Simpson, 1914. Descr. Cat. Naiades: 811.
Utterback, 1915. Amer. Midl. Nat. 4(4): 149.
Ortmann, 1918. Proc. Amer. Phil. Soc. 57(6): 543.
Haas, 1929. Senckenbergiana 11: 333.
Haas, 1930. Senckenbergiana 12(6): 319.
(reference to Rotundaria Rafinesque, 1820)
Type species: Obliquaria (Rotundaria) tuberculata Rafinesque, 1820 = Cyclonaias tuberculata
Taxonomic History (since 1900)
The Taxonomic History lists the ways authors have classified the species currently
assigned to Cyclonaias, since 1900.
Quadrula (Rotundaria) — Simpson (1900), Ortmann (1909), Ortmann (1910), Simpson (1914)
Unio (s.s.) — Call (1900)
Quadrula — Ortmann (1909), Ortmann (1909), Vanatta (1915)
Rotundaria — Ortmann (1910), Ortmann (1912), Utterback (1915), Utterback (1915), Ortmann (1918), Thiele (1934), Campbell & Lydeard (2012), Campbell & Lydeard (2012)
Unio — de Gregorio (1914)
Cyclonaias — Ortmann & Walker (1922), Ortmann (1924), Ortmann (1925), F.C. Baker (1928), Haas (1969), ... Neemuchwala et al. (2023), Hopper et al. (2023), Hauck et al. (2023), Keogh et al. (2024), FMCS (2025)
Quadrula (Cyclonaias) — Frierson (1927), Haas (1930)
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