Unio ovatus var. ornatus Conrad, 1835
Conrad, 1835. Monogr. Fam. Unionidae 1(1): 4.
(intro'd as intra-sp. of Unio ovatus Say, 1817)

Lampsilis (s.s.) excavatus — Simpson (1900)
Lampsilis (s.s.) excavata — Simpson (1914)
Lampsilis (s.s.) ornatus — Frierson (1927)
Lampsilis excavatus — Clench & Turner (1956)
Lampsilis (s.s.) ornata — Haas (1969)
— Burch (1975)
Lampsilis ornatus — Turgeon et al. (1988)
Lampsilis ornata — Williams et al. (1993), Vidrine (1993), Parmalee & Bogan (1998), Turgeon et al. (1998), Roe & Lydeard (1998), ... Hopper et al. (2023), Hauck et al. (2023), Wu et al. (2023), Wu et al. (2024), Dai et al. (2025)
L. ornata — Sheng et al. (2014)
Lampsilis ornate [sic] — Xue et al. (2016), Wu et al. (2016), Chong et al. (2016), Zhou et al. (2017), Wu et al. (2018), Fukata & Iigo (2020)

Unio excavatus Lea, 1857
Lea, 1857. Proc. Acad. Nat. Sci. 9: 32.
Lea, 1858. Jour. Acad. Nat. Sci. 4 [O. 6]: 71, pl. 13, fig. 52.
Type(s): HOLOTYPE USNM_84498, Othcaloosa, Georgia.

Lampsilis (s.s.) excavatus — Simpson (1900)
Lampsilis excavata — Ortmann (1912), R.I. Johnson (1980)
Lampsilis (s.s.) excavata — Simpson (1914)
Lampsilis (s.s.) ornatus — Frierson (1927)
Lampsilis excavatus — Clench & Turner (1956), Burch (1975), ITIS (2012)
Lampsilis (s.s.) ornata — Haas (1969)
Lampsilis ornata — Vidrine (1993), Parmalee & Bogan (1998), Williams et al. (2008), IUCN (2012)

Unio ornatus Sowerby, 1866
‘Conrad’ Sowerby, 1866. Conch. Icon. 16: pl. 31, sp. 162.
(reference to Unio ovatus var. ornatus Conrad, 1835)

Lampsilis excavatus — Clench & Turner (1956), Burch (1975)

Lampsilis ornate Xue et al., 2016
Xue et al., 2016. mtDNA 27(4): [2].
Wu et al., 2016. mtDNA 27(6): 4521.
Chong et al., 2016. Ecol. & Evol. 6(8): Table S2.
Zhou et al., 2017. Conserv. Genet. Resour. 9: 235.
Wu et al., 2018. Conserv. Genet. Resour. 10: 732.
Fukata & Iigo, 2020. mtDNA B 5(2): 1216.
(error for Unio ovatus var. ornatus Conrad, 1835)