Leptodactylus latinasus Jiménez de la Espada, 1875, Vert. Viaje Pacif. Verif. 1862-1865: 40. Holotype: MNCN jar no. 335, according to Heyer, 1969, Herpetologica, 25: 7. Type locality: "Montevideo", Uruguay.
Leptodactylus prognathus Boulenger, 1888, Ann. Mag. Nat. Hist., Ser. 6, 1: 187. Holotype: BMNH 1947.2.17.52, according to Heyer, 1978, Sci. Bull. Nat. Hist. Mus. Los Angeles Co., 29: 59. Type locality: "Rio Grande do Sul", Brazil; restricted to "Rio Grande do Sul, provàvelmente São Lourenço do Sul", by Bokermann, 1966, Lista Anot. Local. Tipo Anf. Brasil.: 74; restricted to "Camaquã, Estado de Rio Grande do Sul, Brasil" by Klappenbach and Langone, 1992, An. Mus. Nac. Hist. Nat. Montevideo, Ser. 2, 8: 189-190. Synonymy by Heyer, 1969, Herpetologica, 25: 3.
Leptodactylus anceps Gallardo, 1964, Rev. Mus. Argent. Cienc. Nat. Bernardino Rivadavia, Cienc. Zool., 9: 100-105. Holotype: MACN 531, by original designation. Type locality: "Argentina, prov. Tucumán, Tucumán". Synonymy by Barrio, 1965, Physis, Buenos Aires, 25: 408 (with Leptodactylus prognathus); Heyer, 1978, Sci. Bull. Nat. Hist. Mus. Los Angeles Co., 29: 34.
Leptodactylus latinasus latinasus — Cei, 1980, Monit. Zool. Ital., N.S., Monogr., 2: 325.
Leptodactylus latinasus anceps — Cei, 1980, Monit. Zool. Ital., N.S., Monogr., 2: 325. Lavilla, 1994 "1992", Acta Zool. Lilloana, 42: 86. Distinctiveness rejected by Ponssa and Lavilla, 1998, Bull. Maryland Herpetol. Soc., 34: 57-63
Oven Frog (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 82).
Gran Chaco of Argentina, Bolivia, and Paraguay, south and east throughout Uruguay and southern Brazil.
In the Leptodactylus fuscus group of Heyer, 1978, Sci. Bull. Nat. Hist. Mus. Los Angeles Co., 29: 1-85. See Cei, 1980, Monit. Zool. Ital., N.S., Monogr., 2: 325-329, for subspecies accounts. Ponssa and Lavilla, 1998, Bull. Maryland Herpetol. Soc., 34: 57-63, rejected subspecies. See comment under Leptodactylus caatingae. Achaval and Olmos, 2003, Anf. Rept. Uruguay, ed. 2: 23, provided for the Uruguayan population a brief account and photograph. Brusquetti and Lavilla, 2006, Cuad. Herpetol., 20: 14, briefly discussed the range in Paraguay.
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