Bivalvia | Unionida | Unionoidea | Unionidae | Ambleminae | Quadrulini | Uniomerus
1 specimen + 1 GenBank voucher

Lea, 1857. Proc. Acad. Nat. Sci. 9: 31.
Lea, 1858. Jour. Acad. Nat. Sci. 4 [O. 6]: 75, pl. 14, fig. 55.
Type(s): HOLOTYPE USNM_85360, creeks near Columbus, Ga.
Unio (sec. Uniomerus) columbensis — Simpson (1900), Simpson (1914)
Elliptio (Uniomerus) tetralasmus-columbensis — Frierson (1927)
Uniomerus obesus — Clench & Turner (1956)
Uniomerus columbensis — Haas (1969), Williams et al. (2008), Bogan (2010), Williams et al. (2011), Campbell & Lydeard (2012), Williams et al. (2014), Williams et al. (2017), Graf & Cummings (2021), FMCS (2021), Neemuchwala et al. (2023), Hopper et al. (2023), FMCS (2025)
Uniomerus tetralasmus — R.I. Johnson (1970), R.I. Johnson (1972), Burch (1975)
Uniomerus carolinianus — Brim Box & Williams (2000)
‘Lea’ of Authors.
B.H. Wright, 1888. Check List N. Amer. Unionidae etc.: [2].
Paetel, 1890. Cat. Conch.-Samml. 3: 148.
(error for Unio columbensis Lea, 1857)
Unio (sec. Uniomerus) columbensis — Simpson (1900), Simpson (1914)
Unio (sec. Uniomerus) columbensis — Simpson (1900), Simpson (1914)
Elliptio (Uniomerus) tetralasmus-columbensis — Frierson (1927)
Uniomerus obesus — Clench & Turner (1956)
Uniomerus columbensis — Haas (1969), Williams et al. (2008), Bogan (2010), Williams et al. (2011), Campbell & Lydeard (2012), Williams et al. (2014), Williams et al. (2017), Graf & Cummings (2021), FMCS (2021), Neemuchwala et al. (2023), Hopper et al. (2023), FMCS (2025)
Uniomerus tetralasmus — R.I. Johnson (1970), R.I. Johnson (1972), Burch (1975)
Uniomerus carolinianus — Brim Box & Williams (2000)