Nototrema cornutum Boulenger, 1898, Proc. Zool. Soc. London, 1898: 124. Holotype: BMNH 1947.2.22.49 (formerly 98.4.28.162) according to Condit, 1964, J. Ohio Herpetol. Soc., 4: 86. Type locality: "Cachabé" (= Cachabí), Provincia Esmeraldas, Ecuador. Noted elsewhere in the original publication as "Cachabé, a small village on the river of that name, on the N. W. Coast, in the Prov. Esmeraldas.... probably about 500 feet above the sea".
Hyla ceratophrys Stejneger, 1911, Proc. U.S. Natl. Mus., 41: 286. Holotype: USNM 47705, by original designation. Type locality: "upper Pequeni River, [Provincia Panamá,] Republic of Panama". Synonymy by Duellman, 1983, Copeia, 1983: 868.
Gastrotheca cornutum — Peters, 1955, Rev. Ecuat. Entomol. Parsitol., 2: 339.
Gastrotheca ceratophrys — Duellman, 1966, Univ. Kansas Publ. Mus. Nat. Hist., 17: 265.
Gastrotheca (Opisthodelphys) cornuta — Dubois, 1987 "1986", Alytes, 5: 31.
Horned Marsupial Frog (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 53).
Pacific lowlands of Ecuador, Colombia, and Panama; the Caribbean slopes of western Panama and adjacent Costa Rica.
In the Gastrotheca ovifera group of Duellman, Maxson, and Jesiolowski, 1988, Copeia, 1988: 527-543. See account (as Gastrotheca ceratophrys) by Duellman, 1970, Monogr. Mus. Nat. Hist. Univ. Kansas: 153-158. Duellman, 2001, Hylid Frogs Middle Am., Ed. 2: Tab. 67, treated Gastrotheca ceratophrys as a distinct species without discussion. See account by Savage, 2002, Amph. Rept. Costa Rica: 294.
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