Unio cuneolus Lea, 1840
Lea, 1840. Proc. Amer. Phil. Soc. 1: 286.
Lea, 1842. Trans. Amer. Phil. Soc. 8 [O. 3]: 193 [31], pl. 7, fig. 3.
Type(s): HOLOTYPE USNM_84591, Holston R., Tenn.

Pleurobema (s.s.) cuneolus — Simpson (1900), Simpson (1914)
Fusconaia cuneolus — Ortmann (1918), Ortmann (1924), Ortmann (1925), Stansbery (1970), Burch (1975), ... Hopper et al. (2023), Hauck et al. (2023), FMCS (2025), Schilling et al. (2025), Campbell & Lydeard (2026)
Quadrula (Pleuronaia) cuneola — Frierson (1927)
Quadrula (Pleuronaia) cuneolus — Haas (1969)
Fusconaia cuneola — Lydeard et al. (1999)

Unio cuneolus Küster, 1861
‘Lea’ of Authors.
Küster, 1861. Conchyl. Cab. 9(2): 182, pl. 57, fig. 4.
Reeve, 1865. Conch. Icon. 16: pl. 23, sp. 107.
(reference to Unio cuneolus Lea, 1840)

Pleurobema (s.s.) cuneolus — Simpson (1900)
Quadrula (Pleuronaia) valida — Frierson (1927)

Unio appressus Lea, 1871
Lea, 1871. Proc. Acad. Nat. Sci. 23: 189.
Lea, 1874. Jour. Acad. Nat. Sci. 8 [O. 13]: 12 [16], pl. 3, fig. 8.
Type(s): FIGURED SYNTYPE USNM_84483, Tuscumbia, Ala.

Pleurobema (s.s.) appressa — Simpson (1900)
Pleurobema (s.s.) appressum — Simpson (1914)
— de Gregorio (1914)
Fusconaia cuneolus appressa — Ortmann (1918), Ortmann (1924), Ortmann (1925)
Quadrula (Pleuronaia) dolabelloides — Frierson (1927), Haas (1969)
Fusconaia cuneolus — Burch (1975), R.I. Johnson (1980), Parmalee & Bogan (1998), Williams et al. (2008)

Unio tuscumbiensis Lea, 1871
Lea, 1871. Proc. Acad. Nat. Sci. 23: 190.
Lea, 1874. Jour. Acad. Nat. Sci. 8 [O. 13]: 11 [15], pl. 3, fig. 7.
Type(s): HOLOTYPE USNM_84593, Tuscumbia, Ala.

Pleurobema (s.s.) appressa — Simpson (1900)
Pleurobema (s.s.) tuscumbiense — Simpson (1914)
— de Gregorio (1914)
Fusconaia cuneolus appressa — Ortmann (1918)
Fusconaia cor — Ortmann & Walker (1922)
Quadrula (Pleuronaia) cor — Frierson (1927), Haas (1969)
Fusconaia cuneolus — Burch (1975), Parmalee & Bogan (1998), Williams et al. (2008)

Unio flavidus Lea, 1872
Lea, 1872. Proc. Acad. Nat. Sci. 24: 156.
Lea, 1874. Jour. Acad. Nat. Sci. 8 [O. 13]: 28 [32], pl. 9, fig. 25.
Type(s): FIGURED SYNTYPE USNM_84550, Clinch R., Tenn.

Pleurobema (s.s.) appressa — Simpson (1900)
Pleurobema (s.s.) tuscumbiense — Simpson (1914)
Fusconaia cuneolus appressa — Ortmann (1918)
Quadrula (Pleuronaia) dolabelloides — Frierson (1927), Haas (1969)
Fusconaia cuneolus — Burch (1975), Parmalee & Bogan (1998), Williams et al. (2008)

Unio cuneatus Reeve, 1864
‘Rafinesque’ Reeve, 1864. Conch. Icon. 16: pl. 16, fig. 73.
(misidentified reference to Pleurobema cuneata Rafinesque, 1820)

Fusconaia cuneolus — Ortmann (1918)

Unio argenteus Sowerby, 1866
‘Lea’ Sowerby, 1866. Conch. Icon. 16: pl. 37, sp. 204.
(misidentified reference to Unio argenteus Lea, 1841)

Pleurobema (s.s.) appressa — Simpson (1900)
Pleurobema (s.s.) appressum — Simpson (1914)
Quadrula (Pleuronaia) valida — Frierson (1927)