Obliquaria (Plagiola) lineolata Rafinesque, 1820
Rafinesque, 1820, Ann. Gén. Sci. Phys. 5 (13): 303 [also as ‘U. linéolata’].
Rafinesque, 1864, [in] Binney & Tryon, reprint: 47.
Type(s): LECTOTYPE ANSP_20242, Ohio River.

Obliquaria (Plagiola) lineolata — Rafinesque (1820)
Unio lineolatus — Ferussac (1835), Küster (1861)
Margarita (Unio) securis — Lea (1838)
Plagiola lineolata — Agassiz (1852), Vanatta (1915), Ortmann (1918), Ortmann & Walker (1922), ..., Murray & Leonard (1962), Haas (1969), Mathiak (1979), Gordon et al. (1979)
Unio (Cunicula) lineolatus — Conrad (1853)
Unio lineolatus var. — Küster (1861)
Unio (s.s.) lineolatus — Call (1900)
Crenodonta lineolata — Morrison (1969)
Ellipsaria lineolata — Burch (1975), R.I. Johnson (1980), Oesch (1984), Turgeon et al. (1988), ..., Graf & Cummings (2021), Hopper et al. (2023), Hauck et al. (2023), Saxon et al. (2023)

Obliquaria (Plagiola) depressa Rafinesque, 1820
Rafinesque, 1819, Jour. Phys. Chim. Hist. Nat. 88: 426 [as ‘Unio (Plagiola) depressa’]. [nomen nudum]
Rafinesque, 1820, Ann. Gén. Sci. Phys. 5 (13): 302, pl. 81, figs. 5-7 [also as ‘U. depressa’].
Rafinesque, 1864, [in] Binney & Tryon, reprint: 29, 47.
(renamed Unio compressus Rafinesque, 1831)
Type(s): NEOTYPE ANSP_20207, Ohio River.

Obliquaria (Plagiola) depressa — Rafinesque (1820)
Unio (Plagiola) depressa — Rafinesque (1819)
Unio securis — Lea (1829), Ravenel (1834), Sowerby (1868)
Obliquaria (Plagiola) compressus — Rafinesque (1831)
Unio lineolatus — Ferussac (1835), Conrad (1853), Küster (1861)
Margarita (Unio) securis — Lea (1836), Lea (1838)
Unio camelus — Hanley (1843)
Margaron (Unio) securis — Lea (1852), Lea (1870)
Unio lineolatus var. — Küster (1861)
Plagiola (s.s.) securis — Simpson (1900), Simpson (1914)
Plagiola lineolata — Vanatta (1915), Ortmann & Walker (1922), Frierson (1927), F.C. Baker (1928), Haas (1969)
Plagiola depressa — Haas (1969)
Ellipsaria lineolata — Burch (1975), Oesch (1984), Parmalee & Bogan (1998), Williams et al. (2008), Watters et al. (2009)

Obliquaria (Ellipsaria) ellipsaria Rafinesque, 1820
Rafinesque, 1820, Ann. Gén. Sci. Phys. 5 (13): 303 [also as ‘U. ellipsaria’].
Rafinesque, 1864, [in] Binney & Tryon, reprint: 48.

Obliquaria (Ellipsaria) ellipsaria — Rafinesque (1820)
Unio ligamentina — Ferussac (1835)
Margarita (Unio) securis — Lea (1838)
Plagiola lineolata — Vanatta (1915), Ortmann & Walker (1922)
Ellipsaria lineolata — Burch (1975), Parmalee & Bogan (1998), Graf & Cummings (2007), Williams et al. (2008), Watters et al. (2009), Graf & Cummings (2021)

Obliquaria (Ellipsaria) ellipsaria var. fusca Rafinesque, 1820
Rafinesque, 1820, Ann. Gén. Sci. Phys. 5 (13): 303.
Rafinesque, 1864, [in] Binney & Tryon, reprint: 48.
(intro'd as intra-sp. of Obliquaria (Ellipsaria) ellipsaria Rafinesque, 1820)

Obliquaria (Ellipsaria) ellipsaria var. fusca — Rafinesque (1820)

Unio securis Lea, 1829
Lea, 1829, Trans. Amer. Phil. Soc. 3 [O. 1]: 437 [51], pl. 11, fig. 17.
Type(s): HOLOTYPE USNM_84475, Cincinnati, Ohio.

Unio securis — Lea (1829), Deshayes (1832), Ravenel (1834), Jay (1835), ..., B.H. Wright (1888), Call (1895), Pilsbry & Rhoads (1896), de Gregorio (1914)
Unio lineolatus — Ferussac (1835), Conrad (1853), Küster (1861)
Margarita (Unio) securis — Lea (1836), Lea (1838)
Unio (Cunicula) secura — Swainson (1840)
Plagiola lineolata — Agassiz (1852), Vanatta (1915), Ortmann (1918), Ortmann & Walker (1922), Ortmann (1924), Frierson (1927), F.C. Baker (1928), Murray & Leonard (1962), Haas (1969)
Margaron (Unio) securis — Lea (1852), Lea (1870)
Unio (Lampsilis) securis — Adams & Adams (1857)
Unio (Limnium sec. Plagiola) securis — Fischer (1887)
Plagiola (s.s.) securis — Simpson (1900), Simpson (1914)
Unio (s.s.) lineolatus — Call (1900)
Plagiola securis — Ortmann (1909), Ortmann (1909), Ortmann (1910), Ortmann (1912), Utterback (1916)
Plagiolopsis securis — Thiele (1934)
Plagiola depressa — Haas (1969)
Crenodonta lineolata — Morrison (1969)
Ellipsaria lineolata — Burch (1975), R.I. Johnson (1980), Oesch (1984), Vidrine (1993), Parmalee & Bogan (1998), Williams et al. (2008), Watters et al. (2009)

Unio compressus Rafinesque, 1831
Rafinesque, 1831, Continuation: 4.
Rafinesque, 1864, [in] Binney & Tryon, reprint: 77.
(new name for Obliquaria (Plagiola) depressa Rafinesque, 1820; homonym of Unio compressus Sowerby, 1829)

Unio compressus — Rafinesque (1831)
Obliquaria (Plagiola) compressus — Rafinesque (1831)
Ellipsaria lineolata — Williams et al. (2008), Watters et al. (2009)

Unio securis Deshayes, 1832
Deshayes, 1832, Enc. Méth. 2 (Deuxième partie): 578.
Deshayes, 1835, Hist. Natur. Anim. sans Vert. 6: 550.
(reference to Unio securis Lea, 1829)

Unio securis — Deshayes (1832)
Crenodonta securis — Schlüter (1838)
Margaron (Unio) securis — Lea (1870)
Unio (Limnium sec. Crenodonta) securis — Fischer (1887)
Plagiola (s.s.) securis — Simpson (1900)

Unio lineolatus Say, 1834
‘Rafinesque’ of Authors.
‘Rafinesque’ Say, 1834, Amer. Conch. 6: pl. 68.
‘Rafinesque’ Conrad, 1834, New Fresh-Water Shells: 70.
(reference to Obliquaria (Plagiola) lineolata Rafinesque, 1820)

Unio lineolatus — Say (1834)
Unio ligamentina — Ferussac (1835)
Margaron (Unio) securis — Lea (1852), Lea (1870)
Unio securis — Call (1895)
Plagiola (s.s.) securis — Simpson (1900), Simpson (1914)
Ellipsaria lineolata — Watters et al. (2009)

Taxonomic History (since 1900)

Plagiola (s.s.) securis — Simpson (1900), Simpson (1914)
Unio (s.s.) lineolatus — Call (1900)
Plagiola securis — Ortmann (1909), Ortmann (1909), Ortmann (1910), Ortmann (1912), Utterback (1916)
Unio securis — de Gregorio (1914)
Plagiola lineolata — Vanatta (1915), Ortmann (1918), Ortmann & Walker (1922), Ortmann (1924), ..., Murray & Leonard (1962), Haas (1969), Mathiak (1979), Gordon et al. (1979)
Plagiolopsis securis — Thiele (1934)
Plagiola depressa — Haas (1969)
Crenodonta lineolata — Morrison (1969)
Ellipsaria lineolata — Burch (1975), R.I. Johnson (1980), Oesch (1984), Turgeon et al. (1988), ..., Graf & Cummings (2021), Hopper et al. (2023), Hauck et al. (2023), Saxon et al. (2023)