Unio laevigatus Say, 1834
‘Rafinesque’ of Authors.
Say, 1834, Amer. Conch. 6: [no pagination].
Conrad, 1834, New Fresh-Water Shells: 70.
Ferussac, 1835, Mag. Zool. 5: 28.
Lea, 1836, Synopsis Fam. Naiades: 59.
Lea, 1852, Synopsis Fam. Naiades: 57.
Conrad, 1853, Proc. Acad. Nat. Sci. 6: 251.
Ortmann, 1921, Mem. Carnegie Mus. 8: 92.
(error for Unio (Aximedia) levigata Rafinesque, 1820)

Anodontites clessini Ortmann, 1921
‘Fischer’ Ortmann, 1921, Mem. Carnegie Mus. 8: 594.
(misidentified reference to Mycetopus clessini Fischer, 1890)

Diplodon hildae Ortmann, 1921
Ortmann, 1921, Mem. Carnegie Mus. 8: 514, pl. 36, fig. 7; pl. 37, figs. 1-3; pl. 46, fig. 3; text fig. 4i.
Type(s): LECTOTYPE CM_61.5864, Rio Jacuhy, Cachoeira, Rio Grande do Sul, Brazil.

Diplodon berthae Ortmann, 1921
Ortmann, 1921, Mem. Carnegie Mus. 8: 528, pl. 38, figs. 1-4; pl. 46, fig. 6.
Type(s): LECTOTYPE CM_61.5865, Rio Jacuhy, Cachoeira, Rio Grande do Sul, Brazil.

Monocondylaea obesa Ortmann, 1921
Ortmann, 1921, Mem. Carnegie Mus. 8: 583, pl. 40, figs. 4-6.
Type(s): LECTOTYPE CM_61.5850, Rio Tapajós, Santarem, Pará, Brazil.

Monocondylaea hollandi Ortmann, 1921
Ortmann, 1921, Mem. Carnegie Mus. 8: 585, pl. 41,fig. 1.
Type(s): HOLOTYPE (ORIG. DESIG.) CM_61.5846, Rio Guaporé, near Rio Sao Simao, Matto Grosso, Brazil.

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

Diplodon (s.s.) imitator Ortmann, 1921
Ortmann, 1921, Mem. Carnegie Mus. 8: 491, pl. 34. figs. 5-7; pl. 35, figs. 1-2; pl. 45, fig. 1; pl. 47, fig. 6; text fig. 4b.
Type(s): LECTOTYPE CM_61.9248, Rio Vaccacahy-Mirim, Santa Maria, Rio Grande do Sul, Brazil.

Diplodon simillimus Ortmann, 1921
Ortmann, 1921, Mem. Carnegie Mus. 8: 495, pl. 35, figs. 3-6; pl. 45, fig. 2; text fig. 4c.
Type(s): LECTOTYPE CM_61.9250, Rio Nhundiaquara, Morretes, Paraná, Brazil.

Diplodon (s.s.) mogymirim Ortmann, 1921
Ortmann, 1921, Mem. Carnegie Mus. 8: 520, pl. 37, figs. 4-7; pl. 46, fig. 5; pl. 48, fig. 2; text fig. 4k.
Type(s): LECTOTYPE CM_61.9260, Creek near Mogy Mirim, Sao Paulo, Brazil, tributary to Rio Mogy Guassú and Rio Grande, upper Paraná drainage.

Diplodon enno Ortmann, 1921
Ortmann, 1921, Mem. Carnegie Mus. 8: 531, pl. 38, figs. 5-7; pl. 46, fig. 7.
Type(s): LECTOTYPE CM_61.9264, Rio Grande, Boqueirao, Bahia, Brazil.

Diplodon decipiens Ortmann, 1921
Ortmann, 1921, Mem. Carnegie Mus. 8: 499, pl. 36, figs. 3-6; pl. 45, fig. 4; pl. 47, fig. 7; text fig. 4e.
Type(s): LECTOTYPE CM_61.9253, creek of Rio Iguassu, Serrinha, Parana, Brazil.

Diplodon vicarius Ortmann, 1921
Ortmann, 1921, Mem. Carnegie Mus. 8: 497, pl. 35, figs. 7-8; pl. 36, figs. 1-2; pl. 45, fig. 3; text fig. 4d.
Type(s): LECTOTYPE CM_61.9251, creek Aqua Quente, 8 miles W of Iporanga, Sao Paulo, Brazil.

Diplodon (s.s.) hasemani Ortmann, 1921
Ortmann, 1921, Mem. Carnegie Mus. 8: 478, pl. 34, figs. 1-4; pl. 47, fig. 5; text fig. 4a.
Type(s): LECTOTYPE CM_61.5857, Rio Guaporé, near Rio Sao Simao, Matto Grosso, Brazil.

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

Anodontites (Lamproscapha) ensiformis (Spix, 1827)

Anodontites (s.s.) clessini (Fischer, 1890)
+ Mycetopus plicatus Clessin, 1882
+ Glabaris nehringi Ihering, 1893

Anodontites (s.s.) crispata Bruguiere, 1972
+ Anodon reticulatus Sowerby, 1867

Anodontites (s.s.) forbesiana (Lea, 1860)

Anodontites (s.s.) hasemani Ortmann, 1921

Anodontites (s.s.) hyrioides Ortmann, 1921

Anodontites (s.s.) iheringi (Clessin, 1882)

Anodontites (s.s.) moricandii (Lea, 1860)
+ Anodonta hertwigii Ihering, 1890

Anodontites (s.s.) mortoniana (Lea, 1834)
+ Anodonta weddellii Hupé, 1857
+ Anodonta lingulata Hupé, 1857

Anodontites (s.s.) obtusa (Spix, 1827)
+ Anodon obtusus var. lituratum Wagner, 1827
+ Anodonta obtusa var. hohenackeri Ihering, 1890

Anodontites (s.s.) patagonica (Lamarck, 1819)
+ Anodon crassus Swainson, 1823
+ Anodonta latomarginata Lea, 1834
+ Anodonta membranacea d’Orbigny, 1846
+ Anodonta solida Küster, 1853
+ Anodonta uruguayensis Lea, 1860
+ Anodonta wymanii Lea, 1860
+ Anodonta sinuosa Clessin, 1873
+ Anodonta serpentina Clessin, 1876
+ Glabaris bergi Ihering, 1893

Anodontites (s.s.) patagonica rubicunda (Lea, 1860)
+ Anodonta pazii Lea, 1866
+ Glabaris latomarginatus var. felix Pilsbry, 1896

Anodontites (s.s.) puelchana (d’Orbigny, 1835)

Anodontites (s.s.) riograndensis (von Ihering, 1890)
+ Anodonta troperziali, var. exotica Corsi, 1900

Anodontites (s.s.) rioplatensis (Sowerby, 1870)

Anodontites (s.s.) tenebricosa (Lea, 1834)
+ Anodon tenebrosa Sowerby, 1867
+ Anodonta tenebricosta Corsi, 1900

Anodontites (s.s.) trapesialis anserina (Spix, 1827)

Anodontites (s.s.) trapesialis scripta (Sowerby, 1867)
+ Anodonta bahiensis Clessin, 1873

Anodontites (s.s.) trapezea (Spix, 1827)
+ Anodon rotundus Wagner, 1827

Anodontites (s.s.) trigona (Spix, 1827)
+ Anodon georginae Griffith & Pidgeon, 1833
+ Anodon moretonianus Sowerby, 1867

Castalia acuticosta Húpe, 1857

Castalia baro (von Ihering, 1910)
+ Castalia ambigua Sowerby, 1869

Castalia hanleyana Sowerby, 1867

Castalia inflata d’Orbigny, 1835
+ Castalia quadrilatera Ihering, 1893

Castalia pectinata (Spix, 1827)
+ Castalia ambigua Ihering, 1890

Castalia undosa von Martens, 1885

Castalina martensi von Ihering, 1891

Castalina nehringi von Ihering, 1891

Castalina psammoica (d’Orbigny, 1835)

Diplodon (Cyclomya) paranensis (Lea, 1834)
+ Unio nocturnus Lea, 1860
+ Unio paraguayanus Martens, 1895

Diplodon (s.s.) berthae Ortmann, 1921

Diplodon (s.s.) burroughianus (Lea, 1834)

Diplodon (s.s.) charruanus (d’Orbigny, 1835)
+ Unio faba d’Orbigny, 1835
+ Unio rhuacoica d’Orbigny, 1835
+ Unio aethiops Lea, 1860
+ Unio parcus Lea, 1866
+ Diplodon hidalgoi Haas, 1916
+ Diplodon fortis Marshall, 1917

Diplodon (s.s.) deceptus Simpson, 1914
+ Unio gratus Ihering, 1893

Diplodon (s.s.) decipiens Ortmann, 1921

Diplodon (s.s.) ellipticus (Spix, 1827)
+ Diplodon ellipticum Wagner, 1827
+ Diplodon (s.s.) wagnerianum Simpson, 1900
+ Diplodon ellipticus santanus Ihering, 1910

Diplodon (s.s.) enno Ortmann, 1921

Diplodon (s.s.) frenzelii (von Ihering, 1893)
+ Diplodon huapensis Bartsch, 1906

Diplodon (s.s.) granosus (Bruguiere, 1972)
+ Unio multistriatus Lea, 1831
+ Unio psammactinus Philippi, 1848
+ Diplodon expansus Ihering, 1910

Diplodon (s.s.) gratus (Lea, 1860)

Diplodon (s.s.) guaranianus (d’Orbigny, 1835)

Diplodon (s.s.) hasemani Ortmann, 1921

Diplodon (s.s.) hildae Ortmann, 1921

Diplodon (s.s.) hylaeus (d’Orbigny, 1835)

Diplodon (s.s.) imitator Ortmann, 1921

Diplodon (s.s.) lacteolus (Lea, 1834)
+ Unio delodonta Lamarck, 1819
+ Unio wymanii Lea, 1860

Diplodon (s.s.) mogymirim Ortmann, 1921

Diplodon (s.s.) parallelopipedon (Lea, 1834)
+ Unio acutirostris Lea, 1866

Diplodon (s.s.) patagonicus (d’Orbigny, 1835)

Diplodon (s.s.) paulista (von Ihering, 1893)

Diplodon (s.s.) piceus (Lea, 1860)

Diplodon (s.s.) rotundus Spix, 1827

Diplodon (s.s.) simillimus Ortmann, 1921

Diplodon (s.s.) suavidicus (Lea, 1856)

Diplodon (s.s.) trifidus (Lea, 1860)

Diplodon (s.s.) uruguayensis (Lea, 1860)
+ Unio apprimus Lea, 1866

Diplodon (s.s.) vicarius Ortmann, 1921

Fossula fossiculifera (d’Orbigny, 1835)

Hyria corrugata Lamarck, 1819
+ Hyria transversa Hupé, 1857

Iheringella balzani (von Ihering, 1893)

Leila castelnaudi (Hupé, 1857)

Monocondylaea hollandi Ortmann, 1921

Monocondylaea lentiformis Lea, 1866

Monocondylaea minuana d’Orbigny, 1835
+ Monocondyloea pazii Lea, 1866

Monocondylaea minuana parchappii d’Orbigny, 1835

Monocondylaea obesa Ortmann, 1921

Monocondylaea paraguayana d’Orbigny, 1835

Mycetopoda siliquosa (Spix, 1827)
+ Anodonta legumen Martens, 1888
+ Mycetopus clessini Ihering, 1893
+ Mycetopoda bahia Ihering, 1910

Mycetopoda staudingeri (von Ihering, 1890)
+ Mycetopoda staudingeri var. aequatorialis Ihering, 1910

Mycetopoda subsinuata (Sowerby, 1868)

Prisodon alatus (Sowerby, 1869)

Prisodon castelnaudi (Húpe, 1857)