Unio (Monocondylaea) corrientesensis d’Orbigny, 1835
d’Orbigny, 1835, Mag. Zool. 5(61-62): 38.
d’Orbigny, 1846, Voyage dans l’Amérique Méridionale 5: 613, pl. 68, figs. 8-10 [as ‘Monocondylaea corrientesensis’].
Type(s): HOLOTYPE BMNH_1854-9-4-28, Rio Batel, Prov. Corrientes, Argentina.

Unio (Monocondylaea) corrientesensis — d’Orbigny (1835)
Margarita (Margaritana) corrientesensis — Lea (1838)
Unio corrientesinsis — Hanley (1843)
Monocondylæa corrientesensis — d’Orbigny (1846)
Margaron (Monocondylœa) corrientesensis — Lea (1852), Lea (1870)
Monocondylaea corrientesensis — Adams & Adams (1857), Simpson (1900), Simpson (1914), Bonetto (1966), ..., Pereira et al. (2014), Torres et al. (2018), Mansur et al. (2020), Graf & Cummings (2021)
Unio corrientesensis — Sowerby (1868)
Monocondylaea paraguayana paraguayana — Haas (1931), Haas (1969)
Monocondylaea paraguayana — Figueiras (1965), Quintana (1982)
Monocondylea corrientesensis — Rumi et al. (2008)

Monocondyloea lentiformis Lea, 1866
Lea, 1866, Proc. Acad. Nat. Sci. 18: 34 [as ‘Monocondylœa lentiformis’].
Lea, 1868, Jour. Acad. Nat. Sci. 6 [O. 12]: 272, pl. 36, fig. 86 [as ‘Monocondylœa’].
Type(s): HOLOTYPE USNM_86335, South America.

Monocondyloea lentiformis — Lea (1866)
Margaron (Monocondylœa) lentiformis — Lea (1870)
Monocondylaea lentiformis — Simpson (1900), Simpson (1914), Ortmann (1921), Morretes (1949), Figueiras (1965), Quintana (1982)
Monocondylæa lentiformis — Corsi (1900)
Monocondylaea lentiformis lentiformis — Haas (1931), Haas (1969)
Monocondylaea corrientesensis — Bonetto (1966), Mansur (1970), Bonetto & Mansur (1970), Simone (2006)

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.

Monocondylaea hollandi — Ortmann (1921), Morretes (1949)
Monocondylaea lentiformis hollandi — Haas (1931), Haas (1969)
Monocondylaea corrientesensis — Simone (2006)

Unio corrientesinsis Hanley, 1843
‘d’Orbig.’ Hanley, 1843, Illustr. Descr. Cat. Rec. Bivalve Shells: 212.
(error for Unio (Monocondylaea) corrientesensis d’Orbigny, 1835)

Unio corrientesinsis — Hanley (1843)

Monocondylaea corrientesiana Martens, 1868
Martens, 1868, Malak. Blatt. 15: 211.
(error for Unio (Monocondylaea) corrientesensis d’Orbigny, 1835)

Monocondylaea corrientesiana — Martens (1868)
Monocondylaea corrientesensis — Mansur (1970), Simone (2006)

Monocondylaea corrientina Doering, 1875
Doering, 1875, Periód. Zool. 2: 119.
(error for Unio (Monocondylaea) corrientesensis d’Orbigny, 1835)

Monocondylaea corrientina — Doering (1875)
Monocondylaea corrientesensis — Mansur (1970), Simone (2006)

Monocondylaea felipponei Marshall, 1922
Marshall, 1922, Proc. U.S. Nat. Mus. 61(2437): 8, pl. 1, figs. 2, 13; pl. 2, figs. 4, 11; pl. 3, fig. 7.
Type(s): HOLOTYPE (ORIG. DESIG.) USNM_340663, Barra del Arroyo Sacra, Paysandu, Uruguay.

Monocondylaea felipponei — Marshall (1922)
Monocondylaea lentiformis lentiformis — Haas (1931), Haas (1969)
Monocondylaea lentiformis — Figueiras (1965)
Monocondylaea corrientesensis — Bonetto (1966), Mansur (1970), Bonetto & Mansur (1970), Simone (2006)

Taxonomic History (since 1900)

Monocondylaea corrientesensis — Simpson (1900), Simpson (1914), Bonetto (1966), Mansur (1970), ..., Pereira et al. (2014), Torres et al. (2018), Mansur et al. (2020), Graf & Cummings (2021)
Monocondylaea lentiformis — Simpson (1900), Simpson (1914), Ortmann (1921), Morretes (1949), Figueiras (1965), Quintana (1982)
Monocondylæa lentiformis — Corsi (1900)
Monocondylaea hollandi — Ortmann (1921), Morretes (1949)
Monocondylaea felipponei — Marshall (1922)
Monocondylaea paraguayana paraguayana — Haas (1931), Haas (1969)
Monocondylaea lentiformis lentiformis — Haas (1931), Haas (1969)
Monocondylaea lentiformis hollandi — Haas (1931), Haas (1969)
Monocondylaea paraguayana — Figueiras (1965), Quintana (1982)
Monocondylea corrientesensis — Rumi et al. (2008)