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. ].

Unio marginalis — Lamarck (1819), Bory de St. Vincent (1827), Lea (1829), Deshayes (1830), Lea (1834), Jay (1835), Hanley (1843), Hutton (1849), Adams & Adams (1857), Küster (1861), Sowerby (1867), Hanley & Theobald (1876), Nevill (1877), Tapparone Canefri (1889)
Margarita (Unio) marginalis — Lea (1836)
Mysca (s.s.) marginalis — Swainson (1840)
Margaron (Unio) marginalis — Lea (1852), Lea (1870)
Unio testudinarius — Mörch (1868)
Unio (s.s.) marginalis — Paetel (1890)
Lamellidens (s.s.) marginalis — Simpson (1900), Preston (1912), Simpson (1914), Preston (1915)
Lamellidens marginalis — Ortmann (1912), Prashad (1919), Annandale & Prashad (1921), Prashad (1922), Thiele (1934), Modell (1942), van Benthem Jutting (1953), Likharev & Starobogatov (1967), Haas (1969), Janaki Ram & Radhakrishna (1984), Subba Rao (1989), Nesemann et al. (2003), Graf & Cummings (2006), Nesemann et al. (2007), Graf & Cummings (2007), Ramakrishna & Dey (2007), Burdi et al. (2009), IUCN (2010), Bogan (2010), Upadhye et al. (2011), Konopleva et al. (2017), Zieritz et al. (2018), Pfeiffer et al. (2018), Jeratthitikul et al. (2019), Bolotov et al. (2020), Konopleva et al. (2020)
Lamellidens testudinarius — Haas (1969)
Lamellidens aff. marginalis — Bolotov et al. (2017), Bolotov et al. (2017), Bolotov et al. (2018), Huang et al. (2019)

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

Unio testudinarius — Spengler (1793), Mörch (1868)
Unio (Naïa) testudinarius — Mörch (1853)
Margaron (Unio) marginalis — Lea (1870)
Unio marginalis — Hanley & Theobald (1876), Tapparone Canefri (1889)
Lamellidens (s.s.) marginalis — Simpson (1900), Preston (1912), Simpson (1914), Preston (1915)
Lamellidens testudinarius — Haas (1969)
Lamellidens marginalis — Bogan (2010)

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

Unio groenlandicus — Schröter (1779)
Unio testudinarius — Mörch (1868)
Margaron (Unio) marginalis — Lea (1870)
Unio marginalis — Hanley & Theobald (1876), Tapparone Canefri (1889)
Lamellidens (s.s.) marginalis — Simpson (1900), Preston (1912), Simpson (1914), Preston (1915)

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

Unio truncatus — Spengler (1793)
Unio marginalis — Hanley & Theobald (1876), Tapparone Canefri (1889)
Lamellidens (s.s.) marginalis — Preston (1912), Simpson (1914), Preston (1915)
Lamellidens testudinarius — Haas (1969)

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 anodontina — Lamarck (1819)
Alasmodonta undulata — Lea (1829)
Unio marginalis — Lea (1834), Hanley (1843)
Margarita (Unio) marginalis — Lea (1836)
Anadontina turgida — Schlüter (1838)
Margaron (Unio) marginalis — Lea (1852), Lea (1870)
Unio anodontinus — Küster (1861)
Unio (s.s.) anodontinus — Paetel (1890)
Lamellidens (s.s.) marginalis — Simpson (1900), Preston (1912), Simpson (1914), Preston (1915)
Lamellidens testudinarius — Haas (1969)

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.

Symphynota bilineata — Lea (1831)
Margarita (Unio) bilineatus — Lea (1836)
Unio bilineatus — Hanley (1843), Adams & Adams (1857), Sowerby (1868)
Margaron (Unio) bilineatus — Lea (1852), Lea (1870)
Unio marginalis var. bilineata — Hanley & Theobald (1876), Tapparone Canefri (1889)
Unio (s.s.) marginalis vr. bilineatus — Paetel (1890)
Lamellidens (s.s.) marginalis — Simpson (1900), Preston (1912), Simpson (1914), Preston (1915)
Lamellidens testudinarius — Haas (1969)

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

Anadontina turgida — Schlüter (1838)

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

Unio anadontina — Schlüter (1838)

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

Unio marginata — Swainson (1840)

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

Unio evanescens — Mousson (1849)
Margaron (Unio) marginalis — Lea (1870)
Lamellidens (s.s.) marginalis — Simpson (1900), Preston (1912), Simpson (1914), Preston (1915)
Lamellidens marginalis — van Benthem Jutting (1953)

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

Unio ligula — Mousson (1849)
Lamellidens marginalis — van Benthem Jutting (1953)

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 thwaitesii — Lea (1859), Reeve (1865), Hanley & Theobald (1876)
Margaron (Unio) thwaitesii — Lea (1870)
Lamellidens (s.s.) thwaitesii — Simpson (1900), Simpson (1914)
Lamellidens (s.s.) marginalis var. thwaitesi — Preston (1912)
Lamellidens (s.s.) marginalis thwaitesii — Preston (1915)
Lamellidens testudinarius — Haas (1969)

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

Unio thwaitsii — 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 anodontinus — Küster (1861)
Unio marginalis var. anodontina — Hanley & Theobald (1876)

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

Unio corrianus — Sowerby (1868), Tapparone Canefri (1889)
Lamellidens (s.s.) marginalis var. obesus — Simpson (1900), Preston (1912)
Lamellidens (s.s.) marginalis var. obesa — Simpson (1914), Preston (1915)

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

Unio consobrinus — Hanley & Theobald (1876)
Lamellidens (s.s.) thwaitesii — Simpson (1900), Simpson (1914)
Lamellidens (s.s.) marginalis var. thwaitesi — Preston (1912)
Lamellidens (s.s.) marginalis thwaitesii — Preston (1915)

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

Unio thwaitesii — Hanley & Theobald (1876)
Lamellidens (s.s.) thwaitesii — Simpson (1900)
Lamellidens (s.s.) generosus — Simpson (1914)
Lamellidens (s.s.) marginalis thwaitesii — Preston (1915)

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. candaharicus — Hanley & Theobald (1876)
Lamellidens (s.s.) marginalis var. candaharicus — Simpson (1900), Preston (1912), Simpson (1914), Preston (1915)
Lamellidens testudinarius — Haas (1969)

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. corriana — Hanley & Theobald (1876)
Lamellidens (s.s.) marginalis var. hanleyi — Simpson (1900), Simpson (1914), Preston (1915)

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. cylindrica — Hanley & Theobald (1876), Tapparone Canefri (1889)
Unio (s.s.) marginalis vr. cylindrica — Paetel (1890)
Lamellidens (s.s.) marginalis var. cylindricus — Simpson (1900), Simpson (1914)
Lamellidens (s.s.) marginalis var. cylindrica — Preston (1915)
Lamellidens testudinarius — Haas (1969)

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. kandaharica — Theobald (1876)
Lamellidens (s.s.) marginalis var. candaharicus — Preston (1912)

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. typica — Hanley & Theobald (1876)
Unio (s.s.) marginalis vr. typicus — Paetel (1890)

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. cylindrica — Tapparone Canefri (1889)
Lamellidens marginalis — Prashad (1922)

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. obesa — Tapparone Canefri (1889)
Lamellidens marginalis — Prashad (1922)

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 marginalis var. subflabellata — Tapparone Canefri (1889)
Lamellidens marginalis — Prashad (1922)

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)

Unio protensus var. obtusatus — Tapparone Canefri (1889)
Lamellidens marginalis — Prashad (1922)

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)

Lamellidens marginalis var. hanleyi — Simpson (1900)
Lamellidens (s.s.) marginalis var. hanleyi — Simpson (1900), Simpson (1914), Preston (1915)
Lamellidens testudinarius — Haas (1969)

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

Unio marginalis var. subflabellatta — Prashad (1922)