Bivalvia | Unionida | Etherioidea | Mycetopodidae | Anodontitinae | Anodontites
Swainson, 1823. Zool. Illustr. 3(1): pl. 176.
Swainson, 1840. Treat. Malacol.: 381 [as ‘Lamproscapha elongata’].
Glabaris (s.s.) elongatus — Simpson (1900)
Anodontites (s.s.) elongatus — Simpson (1914), Haas (1931), Haas (1969), Pereira et al. (2014), Torres et al. (2018)
Anodontites elongatus — Schade (1965), Ramírez et al. (2003), Simone (2006), Graf & Cummings (2007), Lasso et al. (2009), Bogan (2010), IUCN (2011), Pfeiffer et al. (2019), Mansur et al. (2020)
Anodontites elongata — Whelan et al. (2011), Graf et al. (2015), Bolotov et al. (2016), Lopes-Lima et al. (2017), Bolotov et al. (2017), ... Graf & Cummings (2021), Wu et al. (2021), Breure et al. (2022), Torres et al. (2024), Chen et al. (2025)

Deville & Hupé, 1850. Rev. Mag. Zool. 2: 644, pl. 16, fig. 2.
Hupé, 1857. [in] Castelnau, Anim. Nouv. Rares d’Amer. Sud: 88, pl. 18, fig. 2.
Type(s): FIGURED SYNTYPE MNHN_IM-2000-1787, du Haut Amazone. Upper Amazon River.
Glabaris (s.s.) elongatus — Simpson (1900)
Anodontites (s.s.) elongatus — Simpson (1914), Haas (1931), Haas (1969)
Anodonta solidula — Ramírez et al. (2003)
Anodontites elongatus — Simone (2006)

Lea, 1852. Trans. Amer. Phil. Soc. 10 [O. 5]: 287, pl. 26, fig. 49.
Lea, 1852. Proc. Amer. Phil. Soc. 5: 252. [nomen nudum]
Type(s): HOLOTYPE USNM_86723, Amazon River, Pará.
Glabaris (s.s.) elongatus — Simpson (1900)
Anodontites (s.s.) elongatus — Simpson (1914), Haas (1931), Haas (1969)
Anodontites elongatus — Simone (2006)

Lea, 1857. Proc. Acad. Nat. Sci. 9: 85.
Lea, 1857. Jour. Acad. Nat. Sci. 3 [O. 6]: 316 [36], pl. 32, fig. 31.
Type(s): HOLOTYPE USNM_86519, near Cauca River, Prov. Popayán, New Grenada.
Glabaris (s.s.) holtonis — Simpson (1900)
Anodontites (s.s.) holtonis — Simpson (1914)
Anodontites (s.s.) elongatus — Haas (1931), Haas (1969)
Anodontites elongatus — Simone (2006)
Sowerby, 1867. Conch. Icon. 17: pl. 19, sp. 75.
Glabaris (s.s.) elongatus — Simpson (1900)
Anodontites (s.s.) elongatus — Simpson (1914), Haas (1931), Haas (1969)
Anodontites elongatus — Simone (2006)
Sowerby, 1869. Conch. Icon. 17: pl. 24, sp. 95, fig. 95a-b.
Sowerby, 1870. Conch. Icon. 17: index [as ‘wheatleyi’].
Glabaris (s.s.) elongatus — Simpson (1900)
Anodontites (s.s.) elongatus — Simpson (1914), Haas (1931), Haas (1969)
Anodontites elongatus — Simone (2006)

Germain, 1908. Bull. Mus. Nation. Hist. Natur. 14: 64.
Type(s): POSSIBLE SYNTYPES MNHN_MP_0401, Equateur.
Anodontites (s.s.) hidalgoi — Simpson (1914)
Anodontites (s.s.) elongatus — Haas (1969)
Anodontites elongata — Breure et al. (2022)

F. Baker, 1913. Proc. Acad. Nat. Sci. 65: 667, pl. 27, figs. 1-2.
Type(s): HOLOTYPE (MONOTYPY) ANSP_109369, Island of Mexiana, Brazil.
Anodontites dalli — F. Baker (1913)
Anodontites (s.s.) trigonus trigonus — Haas (1931), Haas (1969)
Anodontites (Styganodon) dalli — Morretes (1949)
Anodontites trigonus — Simone (2006)

Marshall, 1934. J. Washington Acad. Sci. 24(2): 80, figs. 4-6.
Type(s): HOLOTYPE USNM_424732, Aroja, Tubicuary River, Paraguay.
Anodontites schadei — Marshall (1934), Schade (1965)
Anodontites (s.s.) patagonicus patagonicus — Haas (1969)
Anodontites elongatus — Simone (2006)
‘Lea’ Sowerby, 1870. Conch. Icon. 17: pl. 36, sp. 147.
(error for Anodonta holtonis Lea, 1857)
Glabaris (s.s.) holtonis — Simpson (1900)
Glabaris (s.s.) elongatus — Simpson (1900)
Glabaris (s.s.) holtonis — Simpson (1900)
Anodonta (s.s.) montezuma — Martens (1900)
Anodontites dalli — F. Baker (1913)
Anodontites (s.s.) elongatus — Simpson (1914), Haas (1931), Haas (1969), Pereira et al. (2014), Torres et al. (2018)
Anodontites (s.s.) holtonis — Simpson (1914)
Anodontites (s.s.) hidalgoi — Simpson (1914)
Anodontites (s.s.) trigonus trigonus — Haas (1931), Haas (1969)
Anodontites schadei — Marshall (1934), Schade (1965)
Anodontites (Styganodon) dalli — Morretes (1949)
Anodontites elongatus — Schade (1965), Ramírez et al. (2003), Simone (2006), Graf & Cummings (2007), Lasso et al. (2009), Bogan (2010), IUCN (2011), Pfeiffer et al. (2019), Mansur et al. (2020)
Anodontites (s.s.) patagonicus patagonicus — Haas (1969)
Anodonta solidula — Ramírez et al. (2003)
Anodontites trigonus — Simone (2006)
Anodontites elongata — Whelan et al. (2011), Graf et al. (2015), Bolotov et al. (2016), Lopes-Lima et al. (2017), Bolotov et al. (2017), ... Graf & Cummings (2021), Wu et al. (2021), Breure et al. (2022), Torres et al. (2024), Chen et al. (2025)