Bivalvia | Unionida | Unionoidea | Unionidae | Ambleminae | Pleurobemini | Elliptio
Lea, 1863. Proc. Acad. Nat. Sci. 15: 192.
Unio (sec. Elliptio) nasutulus — Simpson (1900), Simpson (1914)
Elliptio (s.s.) lanceolata — R.I. Johnson (1970), Burch (1975)
Elliptio nasutilus [sic] — Bogan (2002), Inoue et al. (2018)
Elliptio producta — Bieler (2021)
Elliptio nasutidus — MolluscaBase (2024), Campbell & Lydeard (2026)
‘Lea’ of Authors.
Simpson, 1900. Proc. U.S. Nat. Mus. 22: 735.
Simpson, 1914. Descr. Cat. Naiades: 691.
R.I. Johnson, 1970. Bull. MCZ 140(6): 334.
Burch, 1975. Freshw. Unio. North Amer.: 167.
Bogan, 2002. Workbook Key Freshw. Biv. NC: Table 5.
Perkins et al., 2017. Conserv. Genet. 18: 752.
Inoue et al., 2018. Invert. Syst. 32: Table S2.
(error for Unio nasutidus Lea, 1863)
Elliptio producta — Bieler (2021)

Lea, 1866. Jour. Acad. Nat. Sci. 6 [O. 11]: 12 [16], pl. 3, fig. 9.
(error for Unio nasutidus Lea, 1863)
Type(s): HOLOTYPE USNM_86027, Livingston Cr., Brunswick Co., N.C.
Unio (sec. Elliptio) nasutulus — Simpson (1900), Simpson (1914)
Elliptio (s.s.) productus — Frierson (1927), Haas (1969)
Elliptio (s.s.) lanceolata — R.I. Johnson (1970), Burch (1975)
Elliptio nasutilus [sic] — Perkins et al. (2017)
Elliptio producta — Bieler (2021)
Unio (sec. Elliptio) nasutulus — Simpson (1900), Simpson (1914)
Elliptio (s.s.) productus — Frierson (1927), Haas (1969)
Elliptio (s.s.) lanceolata — R.I. Johnson (1970), Burch (1975)
Elliptio nasutilus [sic] — Bogan (2002), Perkins et al. (2017), Inoue et al. (2018)
Elliptio producta — Bieler (2021)
Elliptio nasutidus — MolluscaBase (2024), Campbell & Lydeard (2026)