Bivalvia | Unionida | Unionoidea | Unionidae | Ambleminae | Pleurobemini
14 Recent freshwater species (19 total species)
Simpson, 1900. Proc. U.S. Nat. Mus. 22: 784.
Simpson, 1914. Descr. Cat. Naiades: 865.
(intro'd as sub-gen. of Quadrula Rafinesque, 1820)
Type species: Unio trigonus Lea, 1831 (orig. desig.) = Fusconaia flava
Ortmann, 1912. Ann. Carnegie Mus. 8: 240.
Ortmann, 1913. Nautilus 27(8): 89.
(error for Fusconaia Simpson, 1900)
Type species: Unio trigonus Lea, 1831 = Fusconaia flava
Ortmann, 1914. Nautilus 28(3): 28.
Type species: Unio subplanus Conrad, 1837 (orig. desig.) = Fusconaia masoni
Ortmann in Ortmann & Walker, 1922. Nautilus 36(1): 1.
Type species: Quincuncina burkei Walker in Ortmann & Walker, 1922 (orig. desig.) = Fusconaia burkei
Ortmann, 1925. Amer. Midl. Nat. 9: 330.
(error for Fusconaia Simpson, 1900)
Type species: Unio trigonus Lea, 1831 = Fusconaia flava
Ortmann, 1925. Amer. Midl. Nat. 9: 330.
(error for Fusconaia Simpson, 1900)
Type species: Unio trigonus Lea, 1831 = Fusconaia flava
Ortmann, 1925. Amer. Midl. Nat. 9: 339.
(error for Lexingtonia Ortmann, 1914)
Type species: Unio subplanus Conrad, 1837 = Fusconaia masoni
Frierson, 1927. Check List N. Amer. Naiades: 10, 54.
(error for Fusconaia Simpson, 1900)
Type species: Unio trigonus Lea, 1831 = Fusconaia flava
The Taxonomic History lists the ways authors have classified the species currently assigned to Fusconaia, since 1900.
Quadrula (sec. Fusconaia) — Simpson (1900), Simpson (1914)
Unio (s.s.) — Call (1900)
Pleurobema (s.s.) — Simpson (1900), Simpson (1914)
Unio (sec. Elliptio) — Simpson (1900), Simpson (1914)
Lampsilis (sec. Eurynia) — Simpson (1900)
Unio — Simpson (1900), de Gregorio (1914), Henderson (1935)
Pleurobema — Simpson (1900), Utterback (1915), Ortmann & Walker (1922), Burch (1975)
Quadrula — Simpson (1900), Ortmann (1909), Ortmann (1909), Ortmann (1909), Ortmann (1910), Vanatta (1915), Bogan (2010), Haag (2012)
Fusconaia — Ortmann (1912), Utterback (1915), Ortmann (1918), Ortmann (1919), Ortmann & Walker (1922), ... Czaja et al. (2023), Freeman et al. (2025), FMCS (2025), Schilling et al. (2025), Cummings et al. (2025)
Fusconaja [sic] — Ortmann (1913), Ortmann (1914)
Lexingtonia — Ortmann (1914), Thiele (1934), Haas (1969), Haas (1969), Burch (1975), ... Turgeon et al. (1998), Graf & Cummings (2007), Cummings & Graf (2010), ITIS (2012), Jones (2015)
Lampsilis (Eurynia) — Simpson (1914)
Nephronaias — Utterback (1916)
Quincuncina — Ortmann & Walker (1922), Thiele (1934), Clench & Turner (1956), Modell (1957), Haas (1969), ... Campbell et al. (2005), Graf & Cummings (2007), Burdick & White (2007), Cummings & Graf (2010), ITIS (2012)
Quadrula (Fusconia [sic]) — Frierson (1927)
Quadrula (Pleuronaia) — Frierson (1927), Haas (1969)
Elliptio (s.s.) — Frierson (1927), Haas (1969)
Pleurobema (Lexingtonia) — Frierson (1927), R.I. Johnson (1970)
Parreysia — Frierson (1927), Haas (1969)
Elliptio (Barynaias) — Frierson (1927)
Quadrula (Quincuncina) — Frierson (1927)
Nephronaias (Sphenonaias) — Haas (1969)