Unio groenlandicus Schröter, 1779
Schröter, 1779, Gesch. Flußconch.: 181, pl. 9, fig. 1. [non-binomial]
Mörch, 1868, Amer. J. Conch. 4: 38.

Unio testudinarius Spengler, 1793
Spengler, 1793, Skr. Naturhist. Selsk. 3: 65, no. 30.

Unio truncatus Spengler, 1793
Spengler, 1793, Skr. Naturhist. Selsk. 3: 65, no. 31.

Unio anodontina Lamarck, 1819
Lamarck, 1819, Hist. Natur. Anim. sans Vert. 6: 80, sp. 47.
(renamed Anadontina turgida Schlüter, 1838)
Type(s): HOLOTYPE GENEVAMUSEUM_XXX,

Unio marginalis Lamarck, 1819
Bruguière, 1797, Encycl. Méth. 2: pl. 247, figs. 1a-c [as Unio sp.].
Lamarck, 1819, Hist. Natur. Anim. sans Vert. 6: 79, sp. 41.
(renamed Unio marginalis var. typica Hanley & Theobald, 1876)
Type(s): POSSIBLE SYNTYPE MNHN_MPL_0031, Habite au Bengale, dans les rizières [sic]... La variété [b] vient de l’ile de Ceylon....Mon cabinet. [Lives in Bengal, in rice [sic]... The [b] variety comes from the island of Ceylon...My cabinet. ].

Symphynota bilineata Lea, 1831
Lea, 1831, Trans. Amer. Phil. Soc. 4 [O. 1]: 98, pl. 11, fig. 19.
Type(s): SYNTYPES ANSP_41876, River Hoogley [about 100 mi above Calcutta] Hindostan.

Anadontina turgida Schlüter, 1838
Schlüter, 1838, Kurzgef. Syst. Verz. Conch. Samml.: 32.
(new name for Unio anodontina Lamarck, 1819)

Unio anadontina Schlüter, 1838
‘Lam.’ Schlüter, 1838, Kurzgef. Syst. Verz. Conch. Samml.: 32.
(error for Unio anodontina Lamarck, 1819)

Unio marginata Swainson, 1840
‘Lamarck’ Swainson, 1840, Treat. Malacol.: 278.
(error for Unio marginalis Lamarck, 1819)

Unio evanescens Mousson, 1849
Mousson, 1849, Land-Süßw.-Moll. Java: 91, pl. 17 [10], fig. 2.

Unio ligula Mousson, 1849
Mousson, 1849, Land-Süßw.-Moll. Java: 94.

Unio thwaitesii Lea, 1859
Lea, 1859, Proc. Acad. Nat. Sci. 11: 152 [as ‘thwaitsii’].
Lea, 1860, Jour. Acad. Nat. Sci. 4 [O. 7]: 246 [64], pl. 37, fig. 125.
(correct name for Unio thwaitsii Lea, 1859)
Type(s): HOLOTYPE BMNH_1965179, Ceylon.

Unio thwaitsii Lea, 1859
Lea, 1859, Proc. Acad. Nat. Sci. 11: 152.
(incorrect original spelling of Unio thwaitesii Lea, 1859)

Unio anodontinus Küster, 1861
‘Lamarck’ Küster, 1861, Conchyl. Cab. 9(2): 240, pl. 80, fig. 5.
(reference to Unio anodontina Lamarck, 1819)

Unio corrianus Sowerby, 1868
‘Lea’ Sowerby, 1868, Conch. Icon. 16: pl. 77, sp. 401.
(misidentified reference to Unio corrianus Lea, 1834)

Unio consobrinus Hanley & Theobald, 1876
‘Lea’ Hanley & Theobald, 1876, Conch. Indica: 19, pl. 41, fig. 7.
(misidentified reference to Unio consobrinus Lea, 1860)

Unio thwaitesii Hanley & Theobald, 1876
‘Lea’ Hanley & Theobald, 1876, Conch. Indica: 20, pl. 43, fig. 1.
(reference to Unio thwaitesii Lea, 1859)

Unio marginalis var. candaharicus Hanley & Theobald, 1876
Hanley & Theobald, 1876, Conch. Indica: 20, pl. 43, fig. 4.
(intro'd as intra-sp. of Unio marginalis Lamarck, 1819)

Unio marginalis var. corriana Hanley & Theobald, 1876
Hanley & Theobald, 1876, Conch. Indica: 20, pl. 44, fig. 4.
(misidentified reference to Unio corrianus Lea, 1834)

Unio marginalis var. cylindrica Hanley & Theobald, 1876
Hanley & Theobald, 1876, Conch. Indica: 20, pl. 44, fig. 1.
(homonym of Unio cylindricus Say, 1817; intro'd as intra-sp. of Unio marginalis Lamarck, 1819)
Type(s): UNKNOWN BMNH_429-06-1-1, Poonassa.

Unio marginalis var. kandaharica Theobald, 1876
Hutton in Theobald, 1876, Cat. Land Freshw. Shells Brit. Ind.: 303.
(error for Unio marginalis var. candaharicus Hanley & Theobald, 1876)

Unio marginalis var. typica Hanley & Theobald, 1876
Hanley & Theobald, 1876, Conch. Indica: 20, pl. 43, fig. 2.
(intro'd as intra-sp. of Unio marginalis Lamarck, 1819; new name for Unio marginalis Lamarck, 1819)

Unio marginalis var. cylindrica Tapparone Canefri, 1889
‘Hanley & Theobald’ Tapparone Canefri, 1889, Ann. Mus. Storia Nat. Genova 27: 346.
(reference to Unio marginalis var. cylindrica Hanley & Theobald, 1876)

Unio marginalis var. obesa Tapparone Canefri, 1889
‘Hanley & Theobald’ Tapparone Canefri, 1889, Ann. Mus. Storia Nat. Genova 27: 346.
(misidentified reference to Unio marginalis var. obesa Hanley & Theobald, 1876)

Unio marginalis var. subflabellata Tapparone Canefri, 1889
Tapparone Canefri, 1889, Ann. Mus. Storia Nat. Genova 27: 346.
(intro'd as intra-sp. of Unio marginalis Lamarck, 1819)

Unio protensus var. obtusatus Tapparone Canefri, 1889
Tapparone Canefri, 1889, Ann. Mus. Storia Nat. Genova 27: 350.
(intro'd as intra-sp. of Unio protensus Tapparone Canefri, 1889)

Lamellidens marginalis var. hanleyi Simpson, 1900
Hanley & Theobald, 1876, Conch. Indica: 20, pl. 44, fig. 4 [as ‘Unio marginalis var. corriana’].
Simpson, 1900, Proc. U.S. Nat. Mus. 22: 855.
Simpson, 1914, Descr. Cat. Naiades: 1169.
(intro'd as intra-sp. of Unio marginalis Lamarck, 1819)

Unio marginalis var. subflabellatta Prashad, 1922
‘Tapparone-Canefri’ Prashad, 1922, Rec. Ind. Mus. 24: 106.
(error for Unio marginalis var. subflabellata Tapparone Canefri, 1889)