Anodon trigonus Wagner, 1827
Spix in Wagner, 1827. Test. Fluv. Brasil.: 29, pl. 22, fig. 2.
(renamed Unio (Anodontes) chiquitana d’Orbigny, 1835)

Glabaris (s.s.) trigonus — Simpson (1900)
Glabaris trigona — Ihering (1910)
Anodontites (s.s.) trigonus — Simpson (1914), Rumi et al. (2008)
Anodontites (s.s.) trigona — Ortmann (1921)
Anodontites (s.s.) trigonus trigonus — Haas (1931), Haas (1969)
Glabaris trigonus — Modell (1942)
Anodontites (Styganodon) trigona — Morretes (1949)
Anodontites trigonus — Mansur & Valer (1992), Bogan & Hoeh (2000), Hoeh et al. (2001), Hoeh et al. (2002), Roe & Hoeh (2003), ... Graf & Cummings (2007), Hoeh et al. (2009), Bogan (2010), IUCN (2011), Zieritz et al. (2015)
Anodontites trigonus trigonus — Ramírez et al. (2003)
Anodontites trigona — Martinez et al. (2004), Lasso et al. (2009), Graf & Cummings (2021), Breure et al. (2022), Torres et al. (2024)
Anodontites elongatus — Mansur et al. (2020)

Anodon georginae Griffith & Pidgeon, 1833
Gray in Griffith & Pidgeon, 1833. [in] Cuvier, Animal Kingdom 12(38): pl. 19, fig. 3 [as ‘georginæ’].
Gray in Griffith & Pidgeon, 1834. [in] Cuvier, Animal Kingdom 12(39-40): 595 [as ‘georginæ’].

Glabaris (s.s.) georginae — Simpson (1900)
Anodontites (s.s.) georginae — Simpson (1914)
Anodontites (s.s.) trigona — Ortmann (1921)
Anodontites (s.s.) trigonus georginae — Haas (1931), Haas (1969), Quintana (1982)
Anodontites trigonus georginae — Schade (1965)
Anodontites trigonus — Simone (2006)
— Petit & Coan (2008)
Anodontites (s.s.) trigonus gorginae [sic] — Rumi et al. (2008)

Unio (Anodontes) chiquitana d’Orbigny, 1835
d’Orbigny, 1835. Mag. Zool. 5(61-62): 41.
(new name for Anodon trigonus Wagner, 1827)
Type(s): SYNTYPE SMF_4053, Rio Parana, Prov. Corrientes, Argentinien.

Glabaris (s.s.) trigonus — Simpson (1900)
Anodontites (s.s.) trigonus — Simpson (1914)
Anodontites (s.s.) trigonus trigonus — Haas (1931), Haas (1969)

Unio (Anodontes) limnoica d’Orbigny, 1835
d’Orbigny, 1835. Mag. Zool. 5(61-62): 40.
d’Orbigny, 1846. Voyage dans l’Amérique Méridionale 5: 619, pl. 79, figs. 1-3 [as ‘Anodonta limnoica’].
Type(s): SYNTYPE SMF_3822, Maloya Sumpfe, Prov Corrientes, Argentinien.

Glabaris (s.s.) limnoicus — Simpson (1900)
Anodontites (s.s.) limnoicus — Simpson (1914)
Anodontites (s.s.) trigonus georginae — Haas (1931), Haas (1969), Quintana (1982)
Anodontites trigonus — Simone (2006)

Unio (Anodontes) puelchana d’Orbigny, 1835
d’Orbigny, 1835. Mag. Zool. 5(61-62): 40.
d’Orbigny, 1846. Voyage dans l’Amérique Méridionale 5: 620, pl. 79, figs. 7-9 [as ‘Anodonta puelchana’].

Glabaris (s.s.) puelchanus — Simpson (1900)
Anodontites (s.s.) limnoicus — Simpson (1914)
Anodontites (s.s.) puelchana — Ortmann (1921)
Anodontites (s.s.) trigonus georginae — Haas (1931), Haas (1969)
Anodontites trigonus — Simone (2006)
Anodontites (s.s.) puelchanus — Rumi et al. (2008), Pereira et al. (2014), Torres et al. (2018)
Anodontites puelchanus — Mansur et al. (2020)
Anodontites puelchana — Torres et al. (2024)

Anodon ovata Swainson, 1841
Swainson, 1840. Treat. Malacol.: 381 [as ‘Patularia ovata’].
Swainson, 1841. Ex. Conch.: 30, pl. 36.

Glabaris (s.s.) trautwinianus — Simpson (1900)
Anodontites (s.s.) trautwinianus — Simpson (1914)
Anodontites trigonus — Simone (2006)

Anodonta trautwiniana Lea, 1852
Lea, 1852. Trans. Amer. Phil. Soc. 10 [O. 5]: 287, pl. 26, fig. 48.
Lea, 1852. Proc. Amer. Phil. Soc. 5: 252 [as ‘troutwiniana’]. [nomen nudum]
Type(s): HOLOTYPE USNM_86684, Carthegena, U.S. Colombia.

Glabaris (s.s.) trautwinianus — Simpson (1900)
Anodontites (s.s.) trautwinianus — Simpson (1914)
Anodontites (s.s.) trigonus trautwinianus — Haas (1931), Haas (1969)
Anodontites trigonus trigonus — Ramírez et al. (2003)
Anodontites trigonus — Simone (2006)

Anodonta castelnaudii Hupé, 1857
Hupé, 1857. [in] Castelnau, Anim. Nouv. Rares d’Amer. Sud: 88, pl. 18, fig. 4.

Glabaris (s.s.) trigonus — Simpson (1900)
Anodontites (s.s.) trigonus — Simpson (1914)
Anodontites (s.s.) trigonus trautwinianus — Haas (1931), Haas (1969)
Anodontites trigonus — Simone (2006)

Anodonta lingulata Hupé, 1857
Hupé, 1857. [in] Castelnau, Anim. Nouv. Rares d’Amer. Sud: 89, pl. 18, fig. 1.

Glabaris (s.s.) lingulatus — Simpson (1900)
Anodontites (s.s.) lingulatus — Simpson (1914)
Anodontites (s.s.) mortoniana — Ortmann (1921)
Anodontites (s.s.) trigonus georginae — Haas (1931), Haas (1969), Quintana (1982)
Anodontites trigonus — Simone (2006)

Anodonta obtusula Hupé, 1857
Hupé, 1857. [in] Castelnau, Anim. Nouv. Rares d’Amer. Sud: 87, pl. 14 [17], fig. 3.

Glabaris (s.s.) puelchanus — Simpson (1900)
Anodontites (s.s.) limnoicus — Simpson (1914)
Anodontites (s.s.) trigonus trautwinianus — Haas (1931), Haas (1969)
Anodontites trigonus — Simone (2006)

Anodonta lymnoica Chenu, 1858
Chenu, 1858. Illustr. Conchyl.: pl. 3, figs. 1-1b.
(error for Unio (Anodontes) limnoica d’Orbigny, 1835)

Glabaris (s.s.) limnoicus — Simpson (1900)
Anodontites (s.s.) limnoicus — Simpson (1914)

Anodonta amazonensis Lea, 1860
Lea, 1860. Proc. Acad. Nat. Sci. 12: 89.
Lea, 1863. Jour. Acad. Nat. Sci. 5 [O. 10]: 395 [31], pl. 46, fig. 300.
Type(s): HOLOTYPE USNM_86724, Upper Amazon, Brazil.

Glabaris (s.s.) amazonensis — Simpson (1900)
Anodontites (s.s.) amazonensis — Simpson (1914)
— de Gregorio (1914)
Anodontites (s.s.) trigonus trigonus — Haas (1931), Haas (1969)
Anodontites trigonus — Simone (2006)

Anodonta incarum Philippi, 1869
Philippi, 1869. Malak. Blatt. 16: 40.

Glabaris (s.s.) incarum — Simpson (1900)
Anodontites (s.s.) incarum — Simpson (1914)
Anodontites (s.s.) trigonus trautwinianus — Haas (1931), Haas (1969)
Anodontites incarum — Mansur & Valer (1992), Ramírez et al. (2003)
Anodontites trigonus — Simone (2006)

Anodonta subrostrata Philippi, 1869
Philippi, 1869. Malak. Blatt. 16: 39.
Pfeiffer, 1869. Novit. Conch. 3: 486, pl. 105, figs. 1-3.

Glabaris (s.s.) trigonus — Simpson (1900)
Anodontites (s.s.) trigonus — Simpson (1914)
Anodontites (s.s.) trigonus trigonus — Haas (1931), Haas (1969)
Anodonta subrostrata — Ramírez et al. (2003)
Anodontites trigonus — Simone (2006)

Anodonta ucayalensis Philippi, 1869
Philippi, 1869. Malak. Blatt. 16: 40.
Pfeiffer, 1869. Novit. Conch. 3: 486, pl. 105, figs. 4-6.

Glabaris (s.s.) trigonus — Simpson (1900)
Anodontites (s.s.) trigonus — Simpson (1914)
Anodontites (s.s.) trigonus trigonus — Haas (1931), Haas (1969)
Anodonta ucayalensis — Ramírez et al. (2003)
Anodontites trigonus — Simone (2006)

Anodon amazoniensis Sowerby, 1870
‘Lea’ of Authors.
Sowerby, 1870. Conch. Icon. 17: pl. 30, sp. 120.
Simone, 2006. Land. Freshw. Moll. Brazil.: 284.
(error for Anodonta amazonensis Lea, 1860)

Glabaris (s.s.) amazonensis — Simpson (1900)

Anodonta carthagena Simpson, 1900
Simpson, 1900. Proc. U.S. Nat. Mus. 22: 922.
Simpson, 1914. Descr. Cat. Naiades: 1427.
(intro'd as syn of Anodonta trautwiniana Lea, 1852)

Glabaris (s.s.) trautwinianus — Simpson (1900)
Anodontites (s.s.) trautwinianus — Simpson (1914)
Anodontites trigonus — Simone (2006)

Anodontites (s.s.) trigonus var. pallescens Simpson, 1914
Simpson, 1914. Descr. Cat. Naiades: 1442.
(intro'd as intra-sp. of Anodon trigonus Wagner, 1827)
Type(s): HOLOTYPE (MONOTYPY) USNM_86731, Amazon River.

Anodontites (s.s.) trigonus — Simpson (1914)

Anodontites (s.s.) hasemani Ortmann, 1921
Ortmann, 1921. Mem. Carnegie Mus. 8: 609, pl. 42, figs. 6-7.
Type(s): LECTOTYPE CM_61.5832 (by R.I. Johnson, 1977: 237), headwaters of the Rio Paraguay, Santa Rita, Matto Grosso, Brazil.

Anodontites (s.s.) hasemani — Ortmann (1921)
Anodontites (Styganodon) hasemani — Morretes (1949)
Anodontites (s.s.) patagonicus patagonicus — Haas (1969)
Anodontites trigonus — Simone (2006)

Anodontites (s.s.) hyrioides Ortmann, 1921
Ortmann, 1921. Mem. Carnegie Mus. 8: 604, pl. 42, figs. 3-5.
Type(s): LECTOTYPE CM_61.5829 (by R.I. Johnson, 1977: 237), Rio Tapajós, Santarem, Pará, Brazil.

Anodontites (s.s.) hyrioides — Ortmann (1921)
Anodontites (s.s.) trigonus trigonus — Haas (1931), Haas (1969)
Anodontites (Styganodon) hyrioides — Morretes (1949)
Anodontites trigonus — Simone (2006)

Leila sowerbyana Frierson, 1922
‘Lea’ Sowerby, 1870. Conch. Icon. 17: pl. 33, sp. 134 [as ‘Anodon trautwinianus’].
Frierson, 1922. Nautilus 36: 9.
(homonym of Glabaris trapezea var. sowerbyana Ihering, 1893)

Leila sowerbyana — Frierson (1922)
Anodontites trigonus — Simone (2006)

Anodontites lizeri Doello-Jurado, 1924
Doello-Jurado, 1924. Physis 7(25): ??.

Anodontites trigonus — Simone (2006)

Anodontites nasutus of Authors, unknown year
Marshall, in USNM coll. of Authors.
Type(s): MANUSCRIPT NAME USNM_361150, Beni River, Rurrenebague, Bolivia, drains into the Madeira which drains into the Amazon.

Margaron (Anodonta) troutwiniana Lea, 1852
Lea, 1852. Synopsis Fam. Naiades: 51.
Lea, 1852. Proc. Amer. Phil. Soc. 5: 252 [as ‘Anodonta troutwiniana’]. [nomen nudum]
(error for Anodonta trautwiniana Lea, 1852)

Glabaris (s.s.) trautwinianus — Simpson (1900)
Anodontites (s.s.) trautwinianus — Simpson (1914)

Anodonta trantwiniana Hupé, 1857
‘Lea’ Hupé, 1857. [in] Castelnau, Anim. Nouv. Rares d’Amer. Sud: 90.
(error for Anodonta trautwiniana Lea, 1852)

Anodon trautwinianus Sowerby, 1870
‘Lea’ Sowerby, 1870. Conch. Icon. 17: pl. 33, sp. 134.
(reference to Anodonta trautwiniana Lea, 1852)

Glabaris (s.s.) trautwinianus — Simpson (1900)
Leila sowerbyana — Frierson (1922)

Anodon chiquetana Simpson, 1900
‘d’Orbigny’ Simpson, 1900. Proc. U.S. Nat. Mus. 22: 928.
‘d’Orbigny’ Simpson, 1914. Descr. Cat. Naiades: 1441.
(error for Unio (Anodontes) chiquitana d’Orbigny, 1835)

Anodontites icarum Simone, 2006
‘Philippi’ Simone, 2006. Land. Freshw. Moll. Brazil.: 284.
(error for Anodonta incarum Philippi, 1869)

Anodontites trigonus gorginae Rumi et al., 2008
Rumi et al., 2008. Rev. Biol. Trop. 56(1): 85.
(error for Anodon georginae Griffith & Pidgeon, 1833)