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Nannophrys Günther, 1869
Nannophrys Günther, 1869 "1868", Proc. Zool. Soc. London, 1868: 482. Type species: Nannophrys ceylonensis Günther, 1869, by monotypy.
Trachucephalus Ferguson, 1874, J. Ceylon Branch R. Asiat. Soc., 1874: 1. Type species: Trachucephalus ceylanicus Ferguson, 1874, by monotypy.
Trachycephalus — Ferguson, 1875, Ann. Mag. Nat. Hist., Ser. 4, 15: 128. Incorrect subsequent spelling of Trachucephalus Ferguson, 1847. Preoccupied by Trachycephalus Tschudi, 1838.
Fergusonia Hoffmann, 1878, in Bronn (ed.), Die Klassen und Ordnungen des Thier-Reichs, 6(2): 629. Replacement name for Trachycephalus Ferguson, 1875.
Nannofrys — Palacky, 1898, Verh. Zool. Bot. Ges. Wien, 48: 375. Incorrect subsequent spelling.
Streamlined Frogs (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 102).
Member of the ranine tribe Ranixalini, according to Dubois, 1987 "1986", Alytes, 5: 66 (subsequently treated as a subfamily, Ranixalinae, by Dubois, 1992, Bull. Mens. Soc. Linn. Lyon, 61: 335). Revised and reviewed by Clarke, 1983, Zool. J. Linn. Soc., 79: 377-398, who considered the genus to have some affinity with Nannobatrachus, Nyctibatrachus, and Ceratobatrachus. See comment under Ranidae. Placed in Dicroglossinae, tribe Dicroglossini by Dubois, Ohler, and Biju, 2001, Alytes, 19: 55, without addressing the status of Ranixalini. On the basis of molecular data, Grosjean, Vences, and Dubois, 2004, Biol. J. Linn. Soc., 81: 171-181, suggested that Nannophrys is in a cluster of genera including Euphlyctis + Hoplobatrachus and Sphaerotheca + Fejervarya (although they did not address the taxa suggested by Clarke, 1983, Zool. J. Linn. Soc., 79: 377-398). Wiens, Sukumaran, Pyron, and Brown, 2009, Evolution, 63: 1217-1231, suggested that Nannophrys is the sister taxon of Euphlyctis + Hoplobatrachus. Pyron and Wiens, 2011, Mol. Phylogenet. Evol., 61: 543-583, in their study of Genbank sequences confirmed the monophyly of this taxon and its position as the sister taxon of Euphlyctis + Hoplobatrachus.
Contained taxa (4 sp.):
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