Unio nobilis Conrad, 1854
Conrad, 1854. Jour. Acad. Nat. Sci. 2(4): 297, pl. 27, figs. 3. [in part]
Type(s): LECTOTYPE ANSP_43019 (by Johnson & Baker, 1973: 163), Louisiana.

Quadrula (sec. Theliderma) asper — Simpson (1900)
Tritogonia nobilis — Simpson (1914), Lopes-Lima et al. (2019), Graf & Cummings (2021), FMCS (2021), Hopper et al. (2023)
Quadrula nobilis — Utterback (1915), Cummings & Mayer (1997), Serb et al. (2003), Cicerello & Schuster (2003), Jones et al. (2005), ... Szumowski et al. (2012), Williams et al. (2017), Marshall et al. (2018), Neemuchwala et al. (2023), Keogh et al. (2024)
Quadrula (s.s.) quadrula-nobilis — Frierson (1927)
Quadrula (s.s.) quadrula nobilis — Haas (1969)
Quadrula quadrula — R.I. Johnson (1980), Haag (2012)

Quadrula quadrula Lydeard et al., 2000
‘Conrad’ of Authors.
Lydeard et al., 2000. Geol. Soc. London Spec. Publ. 177: 157. [in part]
Serb et al., 2003. MPE 28: 10. [in part]
Reis et al., 2013. Graellsia 69(1): 22. [in part]
Amaro et al., 2017. Zool. J. Linn. Soc. 179(4): Table S1. [in part]
Gasparini et al., 2020. Environmental DNA 2(3): Table S1. [in part]
(misidentified reference to Obliquaria (Quadrula) quadrula Rafinesque, 1820)

Quadrula nobilis — Campbell et al. (2005)