Glossostoma Günther, 1901, Biol. Centr. Amer., Rept. Batr., Part 164: 290. Type species: Glossostoma aterrimum Günther, 1900, by monotypy. Junior homonym of Glossostoma LeConte, 1851 (Turbellaria).
Nelsonophryne Frost, 1987, Copeia, 1987: 1025. Replacement name for Glossostoma Günther, 1900.
Nelson Frogs (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 91).
Costa Rica, Panama, Colombia, and Ecuador.
Parker, 1934, Monogr. Frogs Fam. Microhylidae: 143, 146, included these species in Microhyla; Carvalho, 1954, Occas. Pap. Mus. Zool. Univ. Michigan, 555: 11, resurrected Glossostoma. This action was supported by karyotypic evidence provided by Bogart and Nelson, 1976, Herpetologica, 32: 204. Pyron and Wiens, 2011, Mol. Phylogenet. Evol., 61: 543-583, in their study of Genbank sequences, suggested Nelsonophryne to be the sister taxon of Ctenophryne.
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