Amblema antrosa Rafinesque, 1820
Rafinesque, 1820. Ann. Gén. Sci. Phys. 5 (13): 322.
Rafinesque, 1864. [in] Binney & Tryon, reprint: 64.

— Simpson (1900), Simpson (1914)
Quadrula (Fusconia [sic]) antrosa — Frierson (1927)
Fusconaia antrosa — Haas (1969)
Amblema antrosa — Burch (1975)
Fusconaia ebena — Vidrine (1993), Parmalee & Bogan (1998), Williams et al. (2008), Watters et al. (2009), He & Zhuang (2013)

Obliquaria (Rotundaria) pusilla Rafinesque, 1820
Rafinesque, 1818. Amer. Mon. Mag. 3: 355 [as ‘Potamilus pusillus’]. [nomen nudum]
Rafinesque, 1820. Ann. Gén. Sci. Phys. 5 (13): 308 [also as ‘Unio pusilla’].
Rafinesque, 1864. [in] Binney & Tryon, reprint: 23, 52.

— Simpson (1900), Simpson (1914)
Unio buxeus — Vanatta (1915)
Fusconaia pusilla — Morrison (1969)
Obliquaria pusilla — Burch (1975)
Fusconaia ebena — R.I. Johnson (1980), He & Zhuang (2013)

Obovaria obovalis Rafinesque, 1820
Rafinesque, 1818. Amer. Mon. Mag. 3: 355 [as ‘Potamilus obovalis’]. [nomen nudum]
Rafinesque, 1819. Jour. Phys. Chim. Hist. Nat. 88: 426 [as ‘U. (Obovaria) obovalis’]. [nomen nudum]
Rafinesque, 1820. Ann. Gén. Sci. Phys. 5 (13): 311 [also as ‘Unio obovalis’].
Rafinesque, 1864. [in] Binney & Tryon, reprint: 23, 29, 54.
Type(s): LECTOTYPE ANSP_20244, Ohio River.

— Simpson (1900), Simpson (1914)
Quadrula obovalis — Vanatta (1915)
Fusconaia ebenus — Ortmann & Walker (1922)
Quadrula (Fusconia [sic]) antrosa — Frierson (1927)
Fusconaia antrosa — Haas (1969)
Obovaria obovalis — Burch (1975)
Fusconaia ebena — Oesch (1984), Parmalee & Bogan (1998), Williams et al. (2008), Watters et al. (2009), He & Zhuang (2013)

Obovaria pachostea Rafinesque, 1820
Rafinesque, 1820. Ann. Gén. Sci. Phys. 5 (13): 312 [also as ‘U. pachostea’].
Rafinesque, 1864. [in] Binney & Tryon, reprint: 55.

— Simpson (1900), Simpson (1914)
Quadrula (Fusconia [sic]) antrosa — Frierson (1927)
Fusconaia antrosa — Haas (1969)
Plethobasus pachosteus — Morrison (1969)
Obovaria pachostea — Burch (1975)
Plethobasus cicatricosus — R.I. Johnson (1980)
Fusconaia ebena — Parmalee & Bogan (1998), Williams et al. (2008), Watters et al. (2009), He & Zhuang (2013)

Unio ebenus Lea, 1831
Lea, 1831. Trans. Amer. Phil. Soc. 4 [O. 1]: 84 [94], pl. 9, fig. 14.
Type(s): HOLOTYPE USNM_85792, Cincinnati, Ohio.

Quadrula (sec. Fusconaia) ebenus — Simpson (1900), Simpson (1914)
Unio (s.s.) ebenus — Call (1900)
Fusconaia ebenus — Ortmann (1912), Ortmann & Walker (1922), Ortmann (1925), F.C. Baker (1928), Burch (1975), Mathiak (1979)
Unio ebenus, var. — de Gregorio (1914)
Fusconaia ebena — Utterback (1915), Gordon et al. (1979), R.I. Johnson (1980), Davis & Fuller (1981), Oesch (1984), ... Breton et al. (2011), ITIS (2012), IUCN (2012), McMurray et al. (2012), He & Zhuang (2013)
Quadrula obovalis — Vanatta (1915)
Quadrula (Fusconia [sic]) antrosa — Frierson (1927)
Fusconaia antrosa — Haas (1969)
Fusconaia pusilla — Morrison (1969)
Reginaia ebenus — Campbell & Lydeard (2012), Campbell & Lydeard (2012), Inoue et al. (2013), Williams et al. (2017), Zieritz et al. (2018), ... Smith et al. (2020), Graf & Cummings (2021), FMCS (2021), Hopper et al. (2023), FMCS (2025)
Reginaia ebena — Haag (2012), Pfeiffer et al. (2016), Chase et al. (2018), Pfeiffer et al. (2019), Pfeiffer et al. (2019), Inoue et al. (2020), Hauck et al. (2023)

Unio obovalis Say, 1834
Say, 1834. Amer. Conch. 6: [unpaginated].

Quadrula (sec. Fusconaia) ebenus — Simpson (1900), Simpson (1914)
Fusconaia ebena — Watters et al. (2009), He & Zhuang (2013)

Unio obovata Conrad, 1834
‘Raf.’ Conrad, 1834. New Fresh-Water Shells: 69.

Pleurobema cordata — Ortmann & Walker (1922)
— Burch (1975)

Unio obliqua Ferussac, 1835
‘Lamarck’ of Authors.
Ferussac, 1835. Mag. Zool. 5: 28.
Conrad, 1837. Monogr. Fam. Unionidae 1(9): 77, pl. 43, fig. 2.

Quadrula (sec. Fusconaia) ebenus — Simpson (1900), Simpson (1914)
Quadrula (Fusconia [sic]) antrosa — Frierson (1927)
Fusconaia antrosa — Haas (1969)
Fusconaia ebena — Parmalee & Bogan (1998), Watters et al. (2009)

Unio globatus Call, 1894
Call, 1894. Proc. Indiana Acad. Sci. 1893(3): ??.

Quadrula (Fusconia [sic]) antrosa — Frierson (1927)

Unio subrotundus Call, 1894
‘Lea’ Call, 1894. Proc. Indiana Acad. Sci. 1893(3): ??.

Quadrula (Fusconia [sic]) antrosa — Frierson (1927)

Unio pusella Lea, 1836
‘Rafinesque’ Lea, 1836. Synopsis Fam. Naiades: 59.
‘Rafinesque’ Lea, 1852. Synopsis Fam. Naiades: 58.
‘Rafinesque’ Lea, 1870. Synopsis Fam. Naiades: 92.

Fusconaia ebena — He & Zhuang (2013)

Unio mytiliodes Swainson, 1840
Swainson, 1840. Treat. Malacol.: 292.

Unio (s.s.) mytiloides Swainson, 1840
‘Rafinesque’ Swainson, 1840. Treat. Malacol.: 269-270, figs. 52-53; 292 [as ‘mytilïodes’].

Quadrula (sec. Fusconaia) ebenus — Simpson (1900), Simpson (1914)
Quadrula (Fusconia [sic]) antrosa — Frierson (1927)
Fusconaia ebena — Parmalee & Bogan (1998), Watters et al. (2009)