Bivalvia | Unionida | Unionoidea | Unionidae | Ambleminae | Pleurobemini | Elliptio
Conrad, 1834. Amer. J. Sci. 25(2): 340, pl. 1, fig. 9.
Conrad, 1834. New Fresh-Water Shells: 36, pl. 5, fig. 4.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 245.
Unio (sec. Elliptio) arctatus — Simpson (1900), Simpson (1914)
Elliptio (s.s.) arctatus — Frierson (1927), Haas (1969)
Elliptio (s.s.) arctata — R.I. Johnson (1970), Burch (1975)
Elliptio arctata — Kat (1983), Davis (1984), Turgeon et al. (1988), Williams et al. (1993), Vidrine (1993), ... FMCS (2021), Hopper et al. (2023), Hauck et al. (2023), MolluscaBase (2024), FMCS (2025)

Lea, 1840. Proc. Amer. Phil. Soc. 1: 287.
Lea, 1842. Trans. Amer. Phil. Soc. 8 [O. 3]: 198 [36], pl. 9, fig. 9.
Type(s): HOLOTYPE USNM_85890, Chattahoochee R., Columbus, Georgia.
Unio (sec. Elliptio) strigosus — Simpson (1900), Simpson (1914)
Elliptio (s.s.) arctatus — Frierson (1927), Haas (1969)
Elliptio strigosus — Clench & Turner (1956)
Elliptio (s.s.) arctata — R.I. Johnson (1970), Burch (1975)
Elliptio arctata — Parmalee & Bogan (1998), Brim Box & Williams (2000), Williams et al. (2008), Williams et al. (2011), Williams et al. (2014), MolluscaBase (2024)

Lea, 1840. Proc. Amer. Phil. Soc. 1: 287.
Lea, 1842. Trans. Amer. Phil. Soc. 8 [O. 3]: 204 [42], pl. 12, fig. 17.
Type(s): POSSIBLE SYNTYPE USNM_85674, Lee Co., Ga.
Unio (sec. Elliptio) arctatus var. tortivus — Simpson (1900), Simpson (1914)
Elliptio (s.s.) tortivus — Frierson (1927), Haas (1969)
Elliptio strigosus — Clench & Turner (1956)
Elliptio (s.s.) arctata — R.I. Johnson (1970), Burch (1975)
Elliptio arctata — Parmalee & Bogan (1998), Brim Box & Williams (2000), Williams et al. (2008), Williams et al. (2011), Williams et al. (2014), MolluscaBase (2024)

Lea, 1852. Proc. Amer. Phil. Soc. 5: 251. [nomen nudum]
Lea, 1852. Trans. Amer. Phil. Soc. 10 [O. 5]: 259 [15], pl. 14, fig. 9.
Type(s): HOLOTYPE USNM_86155, Abbeville District, S.C.
Unio (sec. Elliptio) lazarus — Simpson (1900), Simpson (1914)
Elliptio dilatata subgibbosa — Utterback (1915)
Elliptio (s.s.) arctatus — Frierson (1927), Haas (1969)
Elliptio (s.s.) arctata — R.I. Johnson (1970), Burch (1975)
Elliptio arctata — MolluscaBase (2024)

Lea, 1852. Trans. Amer. Phil. Soc. 10 [O. 5]: 255 [11], pl. 12, fig. 3.
Lea, 1852. Proc. Amer. Phil. Soc. 5: 252. [nomen nudum]
Type(s): HOLOTYPE USNM_85892, Abbeville, S.C.
Unio (sec. Elliptio) perstriatus — Simpson (1900), Simpson (1914)
Elliptio (s.s.) perstriatus — Frierson (1927), Haas (1969)
Elliptio (s.s.) arctata — R.I. Johnson (1970), Burch (1975)
Elliptio arctata — MolluscaBase (2024)

Lea, 1857. Proc. Acad. Nat. Sci. 9: 85.
Lea, 1862. Jour. Acad. Nat. Sci. 5 [O. 8]: 58 [62], pl. 3, fig. 205.
Type(s): HOLOTYPE USNM_85976, Catawba R., Gaston Co., N.C.
Unio (sec. Elliptio) perstriatus — Simpson (1900), Simpson (1914)
Elliptio (s.s.) perstriatus — Frierson (1927), Haas (1969)
Elliptio (s.s.) arctata — R.I. Johnson (1970), Burch (1975)
Elliptio arctata — MolluscaBase (2024)

Lea, 1859. Proc. Acad. Nat. Sci. 11: 170.
Lea, 1860. Jour. Acad. Nat. Sci. 4 [O. 8]: 337 [19], pl. 54, fig. 162.
Type(s): HOLOTYPE USNM_85579, Columbus, Ga.
Unio (sec. Elliptio) tuomeyi — Simpson (1900), Simpson (1914)
Elliptio (s.s.) arctatus — Frierson (1927), Haas (1969)
Elliptio strigosus — Clench & Turner (1956)
Elliptio (s.s.) icterina — R.I. Johnson (1970), R.I. Johnson (1972), Burch (1975)
Elliptio arctata — Parmalee & Bogan (1998), Williams et al. (2008), Williams et al. (2011), Williams et al. (2014), MolluscaBase (2024)
Elliptio icterina — Brim Box & Williams (2000)

Lea, 1863. Proc. Acad. Nat. Sci. 15: 193.
Lea, 1866. Jour. Acad. Nat. Sci. 6 [O. 11]: 15 [19], pl. 4, fig. 13.
Type(s): HOLOTYPE USNM_86006, Black Rock Landing, Cape Fear R., N.C.
Unio (sec. Elliptio) perstriatus — Simpson (1900), Simpson (1914)
Elliptio (s.s.) perstriatus — Frierson (1927), Haas (1969)
Elliptio (s.s.) arctata — R.I. Johnson (1970), Burch (1975)
Elliptio arctata — MolluscaBase (2024)
Unio (sec. Elliptio) arctatus — Simpson (1900), Simpson (1914)
Unio (sec. Elliptio) arctatus var. tortivus — Simpson (1900), Simpson (1914)
Unio (sec. Elliptio) tuomeyi — Simpson (1900), Simpson (1914)
Unio (sec. Elliptio) perstriatus — Simpson (1900), Simpson (1914)
Unio (sec. Elliptio) strigosus — Simpson (1900), Simpson (1914)
Unio (sec. Elliptio) lazarus — Simpson (1900), Simpson (1914)
Elliptio dilatata subgibbosa — Utterback (1915)
Elliptio (s.s.) tortivus — Frierson (1927), Haas (1969)
Elliptio (s.s.) arctatus — Frierson (1927), Haas (1969)
Elliptio (s.s.) perstriatus — Frierson (1927), Haas (1969)
Elliptio strigosus — Clench & Turner (1956)
Elliptio (s.s.) icterina — R.I. Johnson (1970), R.I. Johnson (1972), Burch (1975)
Elliptio (s.s.) arctata — R.I. Johnson (1970), Burch (1975)
Elliptio arctata — Kat (1983), Davis (1984), Turgeon et al. (1988), Williams et al. (1993), Vidrine (1993), ... FMCS (2021), Hopper et al. (2023), Hauck et al. (2023), MolluscaBase (2024), FMCS (2025)
Elliptio icterina — Brim Box & Williams (2000)