Anodonta subvexa Conrad, 1834
Conrad, 1834. Amer. J. Sci. 25(2): 341, pl. 1, fig. 1.
Conrad, 1834. New Fresh-Water Shells: 73.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 264.

Lampsilis (s.s.) subvexa — Simpson (1900)
Strophitus (s.s.) subvexus — Simpson (1914), Frierson (1927), Haas (1969)
Strophitus subvexus — R.I. Johnson (1967), Turgeon et al. (1988), Williams et al. (1993), Vidrine (1993), IUCN (1996), ... Haag (2012), Inoue et al. (2014), Williams et al. (2017), Inoue et al. (2018), Hauck et al. (2023)
Strophitus subvexa — Burch (1975)
Pseudodontoideus subvexus — Smith et al. (2018), Graf & Cummings (2021), Bieler (2021), FMCS (2021), Whelan et al. (2023), Hopper et al. (2023), Perkins et al. (2025), FMCS (2025)

Margaritana gesnerii Lea, 1858
Lea, 1858. Proc. Acad. Nat. Sci. 10: 138.
Lea, 1862. Jour. Acad. Nat. Sci. 5 [O. 9]: 211 [33], pl. 32, fig. 280.

Strophitus gesnerii — Simpson (1900)
Strophitus (s.s.) gesnerii — Simpson (1914), Haas (1969)
Strophitus conasaugaensis — Ortmann (1923)
Strophitus (Pseudodontoideus) gesneri — Frierson (1927)
Strophitus subvexus — R.I. Johnson (1967), Brim Box & Williams (2000)
Strophitus subvexa — Burch (1975)
Strophitus connasaugaensis — Williams et al. (2008)

Margaritana spillmanii Lea, 1858
Lea, 1858. Proc. Acad. Nat. Sci. 10: 138.
Lea, 1862. Jour. Acad. Nat. Sci. 5 [O. 8]: 105 [109], pl. 17, fig. 252.
Type(s): HOLOTYPE USNM_86278, Magbys Cr., near Columbus, Miss.

Strophitus spillmanii — Simpson (1900)
Strophitus (s.s.) spillmanii — Simpson (1914), Haas (1969)
Strophitus spillmani — Ortmann (1923)
Strophitus (Pseudodontoideus) spillmani — Frierson (1927)
Strophitus subvexus — R.I. Johnson (1967), Brim Box & Williams (2000), Williams et al. (2008)
Strophitus subvexa — Burch (1975)

Margaritana tombecbeensis Lea, 1858
Lea, 1858. Proc. Acad. Nat. Sci. 10: 138.

Strophitus subvexus — R.I. Johnson (1967), Brim Box & Williams (2000), Williams et al. (2008)
Strophitus subvexa — Burch (1975)
Pseudodontoideus subvexus — Bieler (2021)

Margaritana tombigbeensis Lea, 1862
Lea, 1858. Proc. Acad. Nat. Sci. 10: 138 [as ‘tombecbeensis’].
Lea, 1862. Jour. Acad. Nat. Sci. 5 [O. 8]: 107, pl. 18, fig. 255 [as ‘tombigbéensis’].
(error for Margaritana tombecbeensis Lea, 1858)
Type(s): HOLOTYPE USNM_86253, Tombigbee R., near Columbus, Miss.

Strophitus tombigbeensis — Simpson (1900), Ortmann (1923)
Strophitus (s.s.) tombigbeensis — Simpson (1914)
Strophitus (s.s.) subvexus — Frierson (1927), Haas (1969)
Strophitus subvexus — R.I. Johnson (1967), Brim Box & Williams (2000), Williams et al. (2008)
Strophitus subvexa — Burch (1975)
Pseudodontoideus subvexus — Bieler (2021)

Margaritana columbensis Lea, 1867
Lea, 1867. Proc. Acad. Nat. Sci. 19: 81.

Alasmidonta columbensis — Simpson (1900)
Strophitus (s.s.) tombigbeensis — Simpson (1914)
Strophitus (s.s.) subvexus — Frierson (1927), Haas (1969)
Strophitus subvexus — R.I. Johnson (1967), Brim Box & Williams (2000), Williams et al. (2008)
Strophitus subvexa — Burch (1975)

Unio spillmannii Sowerby, 1868
‘Lea’ Sowerby, 1868. Conch. Icon. 16: pl. 82, pl. 435.
(error for Margaritana spillmanii Lea, 1858)

Strophitus spillmanii — Simpson (1900)

Margaritana gessneri Paetel, 1890
‘Lea’ Paetel, 1890. Cat. Conch.-Samml. 3: 173.
(error for Margaritana gesnerii Lea, 1858)

Strophitus gesnerii — Simpson (1900)
Strophitus (s.s.) gesnerii — Simpson (1914)