Unio cor Conrad, 1834
Conrad, 1834. New Fresh-Water Shells: 28, pl. 3, fig. 3.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 247.
Type(s): FIGURED SYNTYPE MCZ_178792, Elk and Flint Rivers, Alabama.

Pleurobema (s.s.) cor — Simpson (1900), Simpson (1914)
— de Gregorio (1914), Ortmann (1925)
Fusconaia cor — Ortmann (1918), Ortmann & Walker (1922), Burch (1975), Turgeon et al. (1988), Williams et al. (1993), ... Klymus et al. (2020), Graf & Cummings (2021), FMCS (2021), Hopper et al. (2023), Hauck et al. (2023)
Quadrula (Pleuronaia) cor — Frierson (1927), Haas (1969)

Unio edgarianus Lea, 1840
Lea, 1840. Proc. Amer. Phil. Soc. 1: 288.
Lea, 1842. Trans. Amer. Phil. Soc. 8 [O. 3]: 214 [52], pl. 15, fig. 30.
Type(s): HOLOTYPE USNM_84685, Tenn R., Florence, Ala.

Pleurobema (s.s.) edgarianus — Simpson (1900)
Pleurobema (s.s.) edgarianum — Simpson (1914)
Unio edgarianus — de Gregorio (1914)
Fusconaia cor — Ortmann (1918), Ortmann & Walker (1922), Burch (1975), Parmalee & Bogan (1998), Williams et al. (2008), IUCN (2012)
Fusconaia edgariana — Ortmann (1924), Ortmann (1925), R.I. Johnson (1980), ITIS (2012)
Quadrula (Pleuronaia) cor — Frierson (1927), Haas (1969)
Fusconaia edgarianus — Stansbery (1970)

Unio edgarianus Reeve, 1864
‘Lea’ Reeve, 1864. Conch. Icon. 16: pl. 15, sp. 65.
(reference to Unio edgarianus Lea, 1840)

Pleurobema (s.s.) edgarianus — Simpson (1900)
Fusconaia cor analoga — Ortmann (1918)
Quadrula (Pleuronaia) analogia [sic] — Frierson (1927)

Unio obuncus Lea, 1871
Lea, 1871. Proc. Acad. Nat. Sci. 23: 192.
Lea, 1874. Jour. Acad. Nat. Sci. 8 [O. 13]: 9 [13], pl. 2, fig. 5.
Type(s): FIGURED SYNTYPE USNM_84698, Holston R., E. Tenn.

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

Unio andersonensis Lea, 1872
Lea, 1872. Proc. Acad. Nat. Sci. 24: 155.
Lea, 1874. Jour. Acad. Nat. Sci. 8 [O. 13]: 36 [40], pl. 12, fig. 33.
Type(s): FIGURED SYNTYPE USNM_84691, Holston R., E Tenn.

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

Fusconaia cor var. analoga Ortmann, 1918
‘Lea’ Reeve, 1864. Conch. Icon. 16: pl. 15, sp. 65 [as ‘Unio edgarianus’].
Ortmann, 1918. Proc. Amer. Phil. Soc. 57(6): 533.
Ortmann, 1924. Amer. Midl. Nat. 9(1): 43.
(intro'd as intra-sp. of Unio cor Conrad, 1834)
Type(s): LECTOTYPE CM_61.6326, Clinch River, Speer’s Ferry, Scott Co., Virginia.

Fusconaia cor analoga — Ortmann (1918)
Fusconaia edgariana analoga — Ortmann (1924), Ortmann (1925)
Quadrula (Pleuronaia) analogia [sic] — Frierson (1927)
Quadrula (Pleuronaia) analoga — Haas (1969)
Fusconaia cor — Burch (1975), Parmalee & Bogan (1998), Williams et al. (2008)
Fusconaia edgariana — R.I. Johnson (1980)

Quadrula (Pleuronaia) analogia Frierson, 1927
‘Ortmann’ Frierson, 1927. Check List N. Amer. Naiades: 60, sp. 261.
(error for Fusconaia cor var. analoga Ortmann, 1918)

Fusconaia cor — Parmalee & Bogan (1998)

Unio andorsonensis de Gregorio, 1914
‘Lea’ de Gregorio, 1914. Il Nat. Siciliano 2: 50.
(error for Unio andersonensis Lea, 1872)