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Proceratophrys Miranda-Ribeiro, 1920
Proceratophrys Miranda-Ribeiro, 1920, Rev. Mus. Paulista, São Paulo, 12: 301. Type species: Ceratophrys bigibbosa Peters, 1872, by monotypy.
Smooth Horned Frogs (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 84).
Eastern and southern Brazil; northeastern Argentina and Paraguay; possibly extending into Bolivia adjacent to the Brazilian border.
Mercadal de Barrio and Barrio, 1993, Amphibia-Reptilia, 14: 13-18, compared the species and noted that the genus needs revision. Izecksohn, Cruz, and Peixoto, 1999 "1998", Rev. Univ. Rural, Ser. Cienc. Vida, 20: 37-54, discussed those species having rostral and eyelid appendages (the Proceratophrys bigibbosa group) as did Kwet and Faivovich, 2001, Copeia, 2001: 203-215. Lavilla and Cei, 2001, Monogr. Mus. Reg. Sci. Nat. Torino, 28: 111, suggested that this genus is not monophyletic, but did not mention with respect to what taxon, although Macrogenioglottis is a candidate (DRF). Izecksohn, Carvalho-e-Silva, and Deiss, 2005, Rev. Brasil. Zool., 22: 225-229, compared osteologically Proceratophrys boiei, Proceratophrys appendicula, Proceratophrys melanopogon, and Proceratophrys laticeps and considered the first three to form a natural group. Prado and Pombal, 2008, Arq. Zool., São Paulo, 39: 1-85, reviewed and revised the species exhibiting eyelid appendages. Pyron and Wiens, 2011, Mol. Phylogenet. Evol., 61: 543-583, in their study of Genbank sequences, provided a tree of exemplar species and suggested that Proceratophrys is the sister taxon of Macrogenioglottus + Odontophrynus. Teixeira, Amaro, Recoder, Vechio, and Rodrigues, 2012, Zootaxa, 3551: 25-42, provided range maps of the species.Dias, Amaro, Carvalho-e-Silva, and Rodrigues, 2013, Zootaxa, 3682: 277–304, provided a Bayesian tree of molecular data primary focused on the species in this genus and discussed the species groups, noting, in particular, that none of the similarity-groups of earlier literature were recovered with exception of the Proceratophrys bigibbosa group. See discussion of the nominal Proceratophrys cristiceps group by Brandão, Caramaschi, Vaz-Silva, and Campos, 2013, Zootaxa, 3750: 321–347, and comments on the same grouping by Martins and Giaretta, 2013, Zootaxa, 3750: 301-320.
Contained taxa (40 sp.):
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