Fusconaia Simpson, 1900
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

Fusconaja Ortmann, 1912
Ortmann, 1912, Ann. Carnegie Mus. 8: 240.
Ortmann, 1913, Nautilus 27(8): 89.
(error for Fusconaia Simpson, 1900)

Lexingtonia Ortmann, 1914
Ortmann, 1914, Nautilus 28(3): 28.
Type species: Unio subplanus Conrad, 1837 (orig. desig.) = Fusconaia masoni

Quincuncina Ortmann & Walker, 1922
Ortmann in Ortmann & Walker, 1922, Nautilus 36(1): 1.
Type species: Quincuncina burkei Ortmann & Walker, 1922 (orig. desig.) = Fusconaia burkei

Fuscnoaia Ortmann, 1925
Ortmann, 1925, Amer. Midl. Nat. 9: 330.
(error for Fusconaia Simpson, 1900)

Fusconala Ortmann, 1925
Ortmann, 1925, Amer. Midl. Nat. 9: 330.
(error for Fusconaia Simpson, 1900)

Levingtonia Ortmann, 1925
Ortmann, 1925, Amer. Midl. Nat. 9: 339.
(error for Lexingtonia Ortmann, 1914)

Fusconia Frierson, 1927
Frierson, 1927, Check List N. Amer. Naiades: 10, 54.
(error for Fusconaia Simpson, 1900)

Taxonomic History (since 1900)

Lampsilis (sec. Eurynia) — Simpson (1900)
Quadrula (sec. Fusconaia) — Simpson (1900), Simpson (1914)
Unio (sec. Elliptio) — Simpson (1900), Simpson (1914)
— Simpson (1900), Martens (1900), de Gregorio (1914), Simpson (1914), Ortmann (1914), Ortmann (1925), Haas (1969)
Pleurobema (s.s.) — Simpson (1900), Simpson (1914)
Unio (s.s.) — Call (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), ..., Czaja et al. (2023), Johnson et al. (2023), Hopper et al. (2023), Hauck et al. (2023)
Fusconaja [sic] — Ortmann (1913), Ortmann (1914)
Lampsilis (Eurynia) — Simpson (1914)
Lexingtonia — Ortmann (1914), Thiele (1934), Haas (1969), Haas (1969), ..., Graf & Cummings (2007), Cummings & Graf (2010), ITIS (2012), Jones (2015)
Nephronaias — Utterback (1916)
Quincuncina — Ortmann & Walker (1922), Thiele (1934), Clench & Turner (1956), Modell (1957), ..., Graf & Cummings (2007), Burdick & White (2007), Cummings & Graf (2010), ITIS (2012)
Elliptio (s.s.) — Frierson (1927), Haas (1969)
Elliptio (Barynaias) — Frierson (1927)
Pleurobema (Lexingtonia) — Frierson (1927), R.I. Johnson (1970)
Parreysia — Frierson (1927), Haas (1969)
Quadrula (Quincuncina) — Frierson (1927)
Quadrula (Fusconia [sic]) — Frierson (1927)
Quadrula (Pleuronaia) — Frierson (1927), Haas (1969)
Nephronaias (Sphenonaias) — Haas (1969)