Unio plicata Say, 1817
‘LeSueur’ Say, 1817, Nich. Encyc. 2: [12].
‘LeSueur’ Say, 1819, Nich. Encyc. 4: [17].
Say, 1858, [in] Binney, Compl. Writings T. Say: 50.
Type(s): NEOTYPE SMF_4305, Ohio, U.S.A.

Unio plicata — Say (1817), Say (1819), Ravenel (1834), Conrad (1840)
Unio crassus var. plicata — Say (1817)
Unio (Elliptio) plicata — Rafinesque (1820)
Unio plicatus — Barnes (1823), Hildreth (1828), Lea (1829), Lea (1834), ..., Sowerby (1866), B.H. Wright (1888), Call (1895), Pilsbry & Rhoads (1896)
Margarita (Unio) plicatus — Lea (1836), Lea (1838)
Crenodonta plicata — Schlüter (1838), Ortmann (1912)
Unio (Theliderma) plicata — Swainson (1840)
Complanaria plicatus — Agassiz (1852)
Margaron (Unio) plicatus — Lea (1852), Lea (1870)
Plectomerus plicatus — Conrad (1853)
Unio (Crenodonta) plicatus — Mörch (1853)
Unio (Dysnomia) plicata — Adams & Adams (1857)
Quadrula (sec. Crenodonta) plicata — Simpson (1900), Simpson (1914)
Unio (s.s.) plicatus — Call (1900)
Amblema plicata — Ortmann & Walker (1922), Modell (1942), Heard & Guckert (1970), Clarke (1973), ..., Dai et al. (2024), Zieritz et al. (2024), Matos et al. (2024), Matos et al. (2024)
Amblema (s.s.) plicata — Frierson (1927), Haas (1930)
Crenodonta peruviana peruviana — Murray & Leonard (1962)
Amblema plicata plicata — Haas (1969), Turgeon et al. (1988), Williams et al. (1993), Watters et al. (2009)
Amblema plicatus — Mackie et al. (1980)
Amblema p. plicata — Hoke (2005)

Amblema costata Rafinesque, 1820
Rafinesque, 1820, Ann. Gén. Sci. Phys. 5 (13): 315, pl. 82, figs. 13-14 [also as ‘Unio costata’].
Rafinesque, 1864, [in] Binney & Tryon, reprint: 58.
Type(s): LECTOTYPE ANSP_20246, small creeks, Kentucky.

Amblema costata — Rafinesque (1820), Ortmann & Walker (1922), Ortmann (1924), Ortmann (1925), F.C. Baker (1928), Thiele (1934), MacNeil (1935), ITIS (2012)
Unio costatus — Ferussac (1835), Conrad (1836), Küster (1852), Reeve (1864)
Margarita (Unio) undulatus — Lea (1836), Lea (1838)
Complanaria costata — Agassiz (1852)
Margaron (Unio) undulatus — Lea (1852), Lea (1870)
Plectomerus costatus — Conrad (1853)
Amblema (plicata) costata — Utterback (1915)
Quadrula costata — Vanatta (1915)
Amblema plicata costata — Ortmann (1918), Haas (1969)
Amblema (s.s.) plicata-costata — Frierson (1927)
Crenodonta peruviana costata — Murray & Leonard (1962)
Amblema (s.s.) plicata costata — Haas (1969)
Amblema plicata — Heard & Guckert (1970), Clarke (1973), Burch (1975), R.I. Johnson (1980), ..., Graf & Cummings (2007), Williams et al. (2008), He & Zhuang (2013), Graf & Cummings (2021)
Amblema plicata plicata — Watters et al. (2009)

Unio perplicatus Conrad, 1841
Conrad, 1841, Proc. Acad. Nat. Sci. 1: 19.
Conrad, 1850, Jour. Acad. Nat. Sci. 1: 276, pl. 38, fig. 2.
Conrad, 1853, Proc. Acad. Nat. Sci. 6: 261 [as ‘Plectomerus perplicatus’].
Type(s): HOLOTYPE ANSP_129919, Jackson, Miss.

Unio perplicatus — Conrad (1841), B.H. Wright (1888), Singley (1893)
Margaron (Unio) perplicatus — Lea (1852), Lea (1870)
Plectomerus perplicatus — Conrad (1853)
Unio (Dysnomia) perplicatus — Adams & Adams (1857)
Unio plicatus — Call (1895)
Quadrula (sec. Crenodonta) perplicata — Simpson (1900), Simpson (1914)
Crenodonta perplicata — Ortmann (1912), Ortmann (1914)
Amblema perplicata — Utterback (1915), Davis & Fuller (1981), Lydeard et al. (1996), Krebs et al. (2003)
Amblema perplicatus — Ortmann (1923)
Amblema costata — Ortmann (1924)
Amblema (s.s.) plicata-perplicata — Frierson (1927)
Amblema plicata costata — Haas (1969)
Amblema plicata — Burch (1975), R.I. Johnson (1980), Vidrine (1993), Howells et al. (1996), Parmalee & Bogan (1998), Williams et al. (2008), He & Zhuang (2013), Patterson et al. (2021)
Amblema plicata perplicata — Turgeon et al. (1988), Williams et al. (1993), Watters et al. (2009)
Amblema elliottii — Mulvey et al. (1997)

Cokeria southalli Marshall, 1916
Marshall, 1916, Nautilus 29: 133.
Type(s): HOLOTYPE USNM_215130, James R., Huron, South Dakota.

Cokeria southalli — Marshall (1916), Haas (1969)
Amblema (s.s.) plicata-southalli — Frierson (1927)
Amblema costata — Thiele (1934)
Amblema plicata costata — Haas (1969)
Amblema plicata — R.I. Johnson (1980), Parmalee & Bogan (1998), Williams et al. (2008), He & Zhuang (2013)
Amblema plicata plicata — Watters et al. (2009)

Unio peruviana Lamarck, 1819
Bruguière, 1797, Encycl. Méth. 2: pl. 248, fig. 7 [as Unio sp.].
Lamarck, 1819, Hist. Natur. Anim. sans Vert. 6: 71, sp. 4.

Unio peruviana — Lamarck (1819), Bory de St. Vincent (1827)
Unio undulatus — Barnes (1823)
Unio plicatus — Lea (1829), Lea (1834), Ferussac (1835), Hanley (1843), Reeve (1864), Sowerby (1866)
Unio plicata — Ravenel (1834)
Margarita (Unio) plicatus — Lea (1836), Lea (1838)
Unio (Theliderma) peruviana — Swainson (1840)
Margaron (Unio) plicatus — Lea (1852), Lea (1870)
Plectomerus plicatus — Conrad (1853)
Unio (Crenodonta) plicatus — Mörch (1853)
Quadrula (sec. Crenodonta) plicata — Simpson (1900), Simpson (1914)
Amblema peruviana — Utterback (1915), Ortmann & Walker (1922), F.C. Baker (1928)
Amblema costata — Ortmann (1925)
Amblema (s.s.) plicata — Frierson (1927)
Crenodonta peruviana peruviana — Murray & Leonard (1962)
Amblema plicata plicata — Haas (1969), Watters et al. (2009)
Amblema plicata — Burch (1975), Mathiak (1979), R.I. Johnson (1980), Parmalee & Bogan (1998), Williams et al. (2008), He & Zhuang (2013)

Unio rariplicata Lamarck, 1819
Lamarck, 1819, Hist. Natur. Anim. sans Vert. 6: 71, sp. 5.
Type(s): HOLOTYPE MNHN_MPL_0037, Habite la rivière de l’Ohio. Michaud.

Unio rariplicata — Lamarck (1819), Deshayes (1832)
Unio plicatus — Barnes (1823), Lea (1829), Ferussac (1835), Hanley (1843), Reeve (1864), Sowerby (1866), Call (1895)
Unio plicata — Ravenel (1834), Conrad (1840)
Margarita (Unio) plicatus — Lea (1836), Lea (1838)
Unio (Theliderma) rariplicata — Swainson (1840)
Margaron (Unio) plicatus — Lea (1852), Lea (1870)
Plectomerus plicatus — Conrad (1853)
Quadrula (sec. Crenodonta) plicata — Simpson (1900), Simpson (1914)
Amblema rariplicata — Utterback (1915), F.C. Baker (1928)
Amblema plicata — Ortmann & Walker (1922), R.I. Johnson (1969), Burch (1975), R.I. Johnson (1980), Parmalee & Bogan (1998), Williams et al. (2008), He & Zhuang (2013)
Amblema (s.s.) plicata — Frierson (1927)
Amblema plicata plicata — Haas (1969), Watters et al. (2009)

Unio crassus Barnes, 1823
‘Say’ Barnes, 1823, Amer. J. Sci. 6 (1-2): 118, figs. 1a-b.
(misidentified reference to Unio crassus Say, 1817)

Unio crassus — Barnes (1823)
Unio plicatus — Lea (1829), Ferussac (1835)
Margarita (Unio) crassus — Lea (1836), Lea (1838)
Unio (Theliderma) crassus — Swainson (1840)
Margaron (Unio) plicatus — Lea (1852), Lea (1870)
Plectomerus plicatus — Conrad (1853)
Quadrula (sec. Crenodonta) plicata — Simpson (1900), Simpson (1914)
Quadrula (Fusconia) subrotunda — Frierson (1927)
Amblema plicata plicata — Watters et al. (2009)
Amblema plicata — He & Zhuang (2013)

Unio undulatus Barnes, 1823
Barnes, 1823, Amer. J. Sci. 6 (1-2): 120, pl. 2, fig. 2a-b.
(homonym of Unio undulata Say, 1817)

Unio undulatus — Barnes (1823), Hildreth (1828), Jay (1835), Hanley (1843), Lewis (1871), B.H. Wright (1888), Singley (1893), Call (1895), Pilsbry & Rhoads (1896), de Gregorio (1914)
Unio plicatus — Lea (1829), Sowerby (1866)
Unio costatus — Ferussac (1835), Conrad (1836), Küster (1852), Reeve (1864)
Margarita (Unio) undulatus — Lea (1836), Lea (1838)
Unio (Theliderma) undulatus — Swainson (1840)
Margaron (Unio) undulatus — Lea (1852), Lea (1870)
Plectomerus costatus — Conrad (1853)
Unio (Dysnomia) undulatus — Adams & Adams (1857)
Quadrula (sec. Crenodonta) undulata — Simpson (1900), Simpson (1914)
Unio (s.s.) undulatus — Call (1900)
Quadrula undulata — Ortmann (1909), Ortmann (1909), Ortmann (1909), Ortmann (1910)
Crenodonta undulata — Ortmann (1912)
Amblema (plicata) costata — Utterback (1915)
Quadrula costata — Vanatta (1915)
Megalonaias gigantea — Ortmann & Walker (1922), F.C. Baker (1928), Burch (1975)
Amblema costata — Ortmann & Walker (1922)
Amblema (Megalonaias) gigantea — Frierson (1927)
Crenodonta peruviana costata — Murray & Leonard (1962)
Amblema plicata — R.I. Johnson (1980), Oesch (1984), Vidrine (1993), Strayer & Jirka (1997), Williams et al. (2008), He & Zhuang (2013)
Megalonaias nervosa — Howells et al. (1996), Williams et al. (2008), Watters et al. (2009)

Unio costatus Conrad, 1836
‘Rafinesque’ of Authors.
Conrad, 1836, Monogr. Fam. Unionidae 1(2): pl. 17, fig. 7.
Reeve, 1864, Conch. Icon. 16: pl. 4, sp. 16.
(reference to Amblema costata Rafinesque, 1820)

Unio costatus — Conrad (1836), Küster (1852)
Unio plicatus — Ferussac (1835)
Margarita (Unio) undulatus — Lea (1836), Lea (1838)
Margaron (Unio) undulatus — Lea (1852), Lea (1870)
Plectomerus costatus — Conrad (1853)
Unio undulatus — Call (1895)
Quadrula (sec. Crenodonta) undulata — Simpson (1900), Simpson (1914)
Amblema plicata — He & Zhuang (2013)

Unio gigantea Lea, 1838
‘Barnes’ Lea, 1838, Trans. Amer. Phil. Soc. 6 [O. 2]: 31, 35.
(misidentified reference to Unio crassus var. giganteus Barnes, 1823)

Unio gigantea — Lea (1838)
Quadrula (sec. Crenodonta) plicata — Simpson (1900), Simpson (1914)
Amblema plicata — Parmalee & Bogan (1998), He & Zhuang (2013)
Amblema plicata plicata — Watters et al. (2009)

Unio undulatus Hanley, 1843
‘Barnes’ Hanley, 1843, Illustr. Descr. Cat. Rec. Bivalve Shells: 175, pl. 20, fig. 26.
(reference to Unio undulatus Barnes, 1823)

Unio undulatus — Hanley (1843)
Margaron (Unio) undulatus — Lea (1870)
Quadrula (sec. Crenodonta) undulata — Simpson (1900), Simpson (1914)
Amblema costata — Ortmann (1924), F.C. Baker (1928)
Amblema plicata — Parmalee & Bogan (1998), He & Zhuang (2013)

Unio atrocostatus Lea, 1845
Lea, 1845, Proc. Amer. Phil. Soc. 4: 163.
Lea, 1848, Trans. Amer. Phil. Soc. 10 [O. 4]: 70 [44], pl. 2, fig. 5 [as ‘atro-costatus’].

Unio atrocostatus — Lea (1845), Reeve (1864), Sowerby (1868), B.H. Wright (1888)
Complanaria atrocostatus — Agassiz (1852)
Margaron (Unio) atrocostatus — Lea (1852), Lea (1870)
Plectomerus perplicatus — Conrad (1853)
Unio (Dysnomia) atrocostatus — Adams & Adams (1857)
Unio (sec. Dysnomia) atrocostatus — Paetel (1890)
Unio undulatus — Call (1895)
Quadrula (sec. Crenodonta) perplicata — Simpson (1900), Simpson (1914)
Amblema (s.s.) plicata-perplicata — Frierson (1927)
Amblema plicata costata — Haas (1969)
Amblema plicata — Williams et al. (2008), He & Zhuang (2013)
Megalonaias nervosa — Watters et al. (2009)

Unio hippopoeus Lea, 1845
Lea, 1845, Proc. Amer. Phil. Soc. 4: 163 [as ‘hippopœus’].
Lea, 1848, Trans. Amer. Phil. Soc. 10 [O. 4]: 67 [41], pl. 1, fig. 1 [as ‘hippopœus’].
Type(s): HOLOTYPE USNM_84096, L. Erie.

Unio hippopoeus — Lea (1845), Küster (1861)
Margaron (Unio) hippopæus — Lea (1852), Lea (1870)
Plectomerus plicatus — Conrad (1853)
Unio (Diplodon) hippopæus — Adams & Adams (1857)
Unio hippopæus — Reeve (1864), B.H. Wright (1888)
Unio plicatus — Call (1895)
Quadrula (sec. Crenodonta) plicata var. hippopæa — Simpson (1900), Simpson (1914)
Quadrula hippopæa — Ortmann (1909)
Quadrula undulata hippopæa — Ortmann (1909)
Amblema (s.s.) plicata-hippopaea — Frierson (1927)
Amblema plicata costata — Haas (1969)
Amblema plicata — Clarke (1973), Burch (1975), Strayer & Jirka (1997), Parmalee & Bogan (1998), Williams et al. (2008), He & Zhuang (2013)
Amblema plicata plicata — Watters et al. (2009)

Unio latecostatus Lea, 1845
Lea, 1845, Proc. Amer. Phil. Soc. 4: 163.
Lea, 1848, Trans. Amer. Phil. Soc. 10 [O. 4]: 68 [42], pl. 1, fig. 2.
Type(s): POSSIBLE SYNTYPE ANSP_127444, Ala. River, Selma, Alabama.

Unio latecostatus — Lea (1845), Küster (1861), B.H. Wright (1888)
Margaron (Unio) laticostasus — Lea (1852)
Plectomerus costatus — Conrad (1853)
Unio (Diplodon) laticostatus — Adams & Adams (1857)
Margaron (Unio) laticostatus — Lea (1870)
Unio laticostatus — Singley (1893)
Unio undulatus — Call (1895)
Quadrula (sec. Crenodonta) undulata var. latecostata — Simpson (1900), Simpson (1914)
Amblema (s.s.) plicata-costata — Frierson (1927)
Amblema plicata — Howells et al. (1996), Williams et al. (2008), He & Zhuang (2013)

Margaron (Unio) laticostasus Lea, 1852
Lea, 1852, Synopsis Fam. Naiades: 21.
(error for Unio latecostatus Lea, 1845)

Margaron (Unio) laticostasus — Lea (1852)

Unio hippopaeus Lea, 1852
‘Lea’ of Authors.
Lea, 1852, Synopsis Fam. Naiades: 21 [as ‘hippopæus’].
Conrad, 1853, Proc. Acad. Nat. Sci. 6: 261 [as ‘hippopæus’].
Adams & Adams, 1857, Gen. Rec. Moll. 2(31-32): 497 [as ‘hippopæus’].
Reeve, 1864, Conch. Icon. 16: pl. 11, sp. 40 [as ‘hippopæus’].
Lea, 1870, Synopsis Fam. Naiades: 31 [as ‘hippopæus’].
B.H. Wright, 1888, Check List N. Amer. Unionidae etc.: [3], [as ‘hippopæus’].
Simpson, 1900, Proc. U.S. Nat. Mus. 22: 767 [as ‘hippopæa’].
Ortmann, 1909, Nautilus 22(10): 101 [as ‘Q. hippopæa’].
Ortmann, 1909, Ann. Carnegie Mus. 5: 203 [as ‘Quadrula undulata hippopæa’].
Simpson, 1914, Descr. Cat. Naiades: 816 [as ‘hippopæa’].
Frierson, 1927, Check List N. Amer. Naiades: 61.
Haas, 1969, Das Tierreich 88: 287.
Clarke, 1973, Malacologia 13(1-2): 35.
Burch, 1975, Freshw. Unio. North Amer.: 165.
Strayer & Jirka, 1997, Pearly Mussels NY (26): 98.
He & Zhuang, 2013, Freshwater Bivalves China: 27.
(error for Unio hippopoeus Lea, 1845)

Unio hippopaeus — Lea (1852)
Amblema plicata plicata — Watters et al. (2009)

Unio heros Küster, 1855
‘Say’ Küster, 1855, Conchyl. Cab. 9(2): 136, pl. 40, figs. 1-2.
(misidentified reference to Unio heros Say, 1829)

Unio heros — Küster (1855)
Quadrula (sec. Crenodonta) plicata — Simpson (1900), Simpson (1914)
Amblema (s.s.) plicata — Frierson (1927)
Amblema plicata plicata — Haas (1969), Watters et al. (2009)
Amblema plicata — Parmalee & Bogan (1998)

Unio pearlensis Conrad, 1855
Conrad, 1855, Proc. Acad. Nat. Sci. 7: 256.
Type(s): LECTOTYPE ANSP_129918, Pearl River, Miss.

Unio pearlensis — Conrad (1855)
Unio perlensis — Reeve (1864)
Margaron (Unio) perplicatus — Lea (1870)
Quadrula (sec. Crenodonta) perplicata — Simpson (1900), Simpson (1914)
Amblema (s.s.) plicata-perplicata — Frierson (1927)
Amblema plicata costata — Haas (1969)
Amblema plicata — Parmalee & Bogan (1998), Williams et al. (2008), He & Zhuang (2013)
Amblema plicata plicata — Watters et al. (2009)

Unio plicatus Küster, 1856
‘Say’ of Authors.
Küster, 1856, Conchyl. Cab. 9(2): 137, pl. 40, fig. 3.
Chenu, 1859, Manuel Conchyl. 2: 143, pl. 706.
(reference to Unio plicata Say, 1817)

Unio plicatus — Küster (1856)
Margaron (Unio) plicatus — Lea (1870)
Quadrula (sec. Crenodonta) undulata — Simpson (1900), Simpson (1914)
Strophitus undulatus — Vidrine (1993)
Amblema plicata — He & Zhuang (2013)

Unio laticostatus Adams & Adams, 1857
‘Lea’ of Authors.
Adams & Adams, 1857, Gen. Rec. Moll. 2(31-32): 497.
Lea, 1870, Synopsis Fam. Naiades: 31.
Singley, 1893, Geol. Surv. Texas (1892): 317.
(error for Unio latecostatus Lea, 1845)

Unio laticostatus — Adams & Adams (1857)
Quadrula (sec. Crenodonta) undulata var. latecostata — Simpson (1900), Simpson (1914)

Unio perlensis Reeve, 1864
‘Conrad’ of Authors.
Reeve, 1864, Conch. Icon. 16: pl. 11, sp. 42.
Paetel, 1890, Cat. Conch.-Samml. 3: 163.
(error for Unio pearlensis Conrad, 1855)

Unio perlensis — Reeve (1864)
Quadrula (sec. Crenodonta) perplicata — Simpson (1900), Simpson (1914)
Amblema (s.s.) plicata-perplicata — Frierson (1927)
Amblema plicata — Parmalee & Bogan (1998)

Unio perplicatus Reeve, 1864
‘Conrad, Anthony, MS.’ Reeve, 1864, Conch. Icon. 16: pl. 9, sp. 35; errata [changed to ‘U. atrocostatus’].
(reference to Unio perplicatus Conrad, 1841; error for Unio atrocostatus Lea, 1845)

Unio perplicatus — Reeve (1864)
Unio multiplicatus — Call (1895)
Unio (s.s.) multiplicatus — Call (1900)
Quadrula (sec. Crenodonta) perplicata — Simpson (1900)

Unio brazosensis Lea, 1868
Lea, 1868, Proc. Acad. Nat. Sci. 20: 144.
Lea, 1868, Jour. Acad. Nat. Sci. 6 [O. 12]: 309 [69], pl. 48, fig. 122.
Type(s): FIGURED SYNTYPE USNM_84110, Brazos River, Tex.

Unio brazosensis — Lea (1868), B.H. Wright (1888), Singley (1893)
Margaron (Unio) brazosensis — Lea (1870)
Unio plicatus — Call (1895)
Quadrula (sec. Crenodonta) perplicata — Simpson (1900), Simpson (1914)
Amblema (s.s.) plicata-perplicata — Frierson (1927)
Amblema plicata costata — Haas (1969)
Amblema plicata — Parmalee & Bogan (1998), Williams et al. (2008), He & Zhuang (2013)
Amblema plicata plicata — Watters et al. (2009)

Unio lincecumii Lea, 1868
Lea, 1868, Proc. Acad. Nat. Sci. 20: 144.
Lea, 1868, Jour. Acad. Nat. Sci. 6 [O. 12]: 312 [72], pl. 49, fig. 125.
Type(s): FIGURED SYNTYPE USNM_84112, Dallas Co., Texas.

Unio lincecumii — Lea (1868), B.H. Wright (1888), Singley (1893)
Margaron (Unio) lincecumii — Lea (1870)
Unio plicatus — Call (1895)
Quadrula (sec. Crenodonta) perplicata — Simpson (1900), Simpson (1914)
Amblema (s.s.) plicata-perplicata — Frierson (1927)
Amblema plicata costata — Haas (1969)
Amblema plicata — Parmalee & Bogan (1998), Williams et al. (2008), He & Zhuang (2013)
Amblema plicata plicata — Watters et al. (2009)

Unio pauciplicatus Lea, 1872
Lea, 1872, Proc. Acad. Nat. Sci. 24: 156.
Lea, 1874, Jour. Acad. Nat. Sci. 8 [O. 13]: 29 [33], pl. 9, fig. 26.
Type(s): FIGURED SYNTYPE USNM_84111, Austin, Texas.

Unio pauciplicatus — Lea (1872), B.H. Wright (1888), Singley (1893)
Unio plicatus — Call (1895)
Quadrula (sec. Crenodonta) perplicata — Simpson (1900), Simpson (1914)
Amblema (s.s.) plicata-perplicata — Frierson (1927)
Amblema plicata costata — Haas (1969)
Amblema plicata — Parmalee & Bogan (1998), Williams et al. (2008), He & Zhuang (2013)
Amblema plicata plicata — Watters et al. (2009)

Unio quintardii Cragin, 1887
Cragin, 1887, Bull. Washburn Coll. 2: 6.
Type(s): HOLOTYPE ANSP_63304, Sac & Fox Reservation, Oklahoma.

Unio quintardii — Cragin (1887)
Unio guintardii — B.H. Wright (1888)
Unio undulatus — Call (1895)
Quadrula (sec. Crenodonta) perplicata var. quintardii — Simpson (1900), Simpson (1914)
Amblema perplicata quintardi — Utterback (1915)
Amblema (s.s.) plicata-quintardi — Frierson (1927)
Amblema plicata costata — Haas (1969)
Amblema plicata — R.I. Johnson (1980), Parmalee & Bogan (1998), Williams et al. (2008), He & Zhuang (2013)
Amblema plicata plicata — Watters et al. (2009)

Unio guintardii B.H. Wright, 1888
‘Cragin’ B.H. Wright, 1888, Check List N. Amer. Unionidae etc.: [3].
(error for Unio quintardii Cragin, 1887)

Unio guintardii — B.H. Wright (1888)

Unio lincecurei Paetel, 1890
‘Lea’ Paetel, 1890, Cat. Conch.-Samml. 3: 157.
(error for Unio lincecumii Lea, 1868)

Unio lincecurei — Paetel (1890)
Quadrula (sec. Crenodonta) perplicata — Simpson (1900), Simpson (1914)
Amblema plicata plicata — Watters et al. (2009)

Unio pilsbryi Marsh, 1891
Marsh, 1891, Nautilus 5(1): 1.
Pilsbry, 1892, Proc. Acad. Nat. Sci. 44: 131, pl. 8, figs. 7-8.
Pilsbry, 1893, Nautilus 7(1): pl. 1, figs. 7-8.
Type(s): HOLOTYPE ANSP_41589, Little Red River, Ark.

Unio pilsbryi — Marsh (1891)
Unio undulatus — Call (1895)
Quadrula (sec. Crenodonta) undulata var. pilsbryi — Simpson (1900), Simpson (1914)
Amblema perplicata quintardi — Utterback (1915)
Amblema (s.s.) plicata-pilsbryi — Frierson (1927)
Amblema plicata costata — Haas (1969)
Amblema plicata — R.I. Johnson (1980), Parmalee & Bogan (1998), Williams et al. (2008), He & Zhuang (2013)
Amblema plicata plicata — Watters et al. (2009)

Taxonomic History (since 1900)

Quadrula (sec. Crenodonta) plicata — Simpson (1900), Simpson (1914)
Unio (s.s.) plicatus — Call (1900)
Quadrula (sec. Crenodonta) undulata — Simpson (1900), Simpson (1914)
Unio (s.s.) undulatus — Call (1900)
Quadrula (sec. Crenodonta) perplicata — Simpson (1900), Simpson (1914)
Quadrula (sec. Crenodonta) plicata var. hippopæa — Simpson (1900), Simpson (1914)
Quadrula (sec. Crenodonta) undulata var. latecostata — Simpson (1900), Simpson (1914)
Unio (s.s.) multiplicatus — Call (1900)
Quadrula (sec. Crenodonta) perplicata var. quintardii — Simpson (1900), Simpson (1914)
Quadrula (sec. Crenodonta) undulata var. pilsbryi — Simpson (1900), Simpson (1914)
Quadrula undulata — Ortmann (1909), Ortmann (1909), Ortmann (1909), Ortmann (1910)
Quadrula hippopæa — Ortmann (1909)
Quadrula undulata hippopæa — Ortmann (1909)
Crenodonta plicata — Ortmann (1912)
Crenodonta undulata — Ortmann (1912)
Crenodonta perplicata — Ortmann (1912), Ortmann (1914)
Unio undulatus — de Gregorio (1914)
Amblema peruviana — Utterback (1915), Ortmann & Walker (1922), F.C. Baker (1928)
Amblema rariplicata — Utterback (1915), F.C. Baker (1928)
Amblema (plicata) costata — Utterback (1915)
Quadrula costata — Vanatta (1915)
Amblema perplicata — Utterback (1915), Davis & Fuller (1981), Lydeard et al. (1996), Krebs et al. (2003)
Amblema perplicata quintardi — Utterback (1915)
Cokeria southalli — Marshall (1916), Haas (1969)
Amblema plicata costata — Ortmann (1918), Haas (1969)
Amblema plicata — Ortmann & Walker (1922), Modell (1942), R.I. Johnson (1969), Heard & Guckert (1970), ..., Dai et al. (2024), Zieritz et al. (2024), Matos et al. (2024), Matos et al. (2024)
Amblema costata — Ortmann & Walker (1922), Ortmann (1924), Ortmann (1925), F.C. Baker (1928), Thiele (1934), MacNeil (1935), ITIS (2012)
Megalonaias gigantea — Ortmann & Walker (1922), F.C. Baker (1928), Burch (1975)
Amblema perplicatus — Ortmann (1923)
Amblema (s.s.) plicata — Frierson (1927), Haas (1930)
Amblema (s.s.) plicata-costata — Frierson (1927)
Quadrula (Fusconia) subrotunda — Frierson (1927)
Amblema (Megalonaias) gigantea — Frierson (1927)
Amblema (s.s.) plicata-perplicata — Frierson (1927)
Amblema (s.s.) plicata-hippopaea — Frierson (1927)
Amblema (s.s.) plicata-quintardi — Frierson (1927)
Amblema (s.s.) plicata-pilsbryi — Frierson (1927)
Amblema (s.s.) plicata-southalli — Frierson (1927)
Crenodonta peruviana peruviana — Murray & Leonard (1962)
Crenodonta peruviana costata — Murray & Leonard (1962)
Amblema plicata plicata — Haas (1969), Turgeon et al. (1988), Williams et al. (1993), Watters et al. (2009)
Amblema (s.s.) plicata costata — Haas (1969)
Amblema plicatus — Mackie et al. (1980)
Amblema plicata perplicata — Turgeon et al. (1988), Williams et al. (1993), Watters et al. (2009)
Strophitus undulatus — Vidrine (1993)
Megalonaias nervosa — Howells et al. (1996), Williams et al. (2008), Watters et al. (2009)
Amblema elliottii — Mulvey et al. (1997)
Amblema p. plicata — Hoke (2005)