First fossil record of the South American frog genus Odontophrynus Reinhardt and Lütken, 1862 (Anura, Neobatrachia)

The frog genus Odontophrynus comprises 10 species arranged in three species groups that inhabit southeastern South America. In Argentina, it is represented by the O. americanus and O. occidentalis species groups and, despite being a fairly common taxon of the extant herpetofauna, it has no known fos...

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Detalles Bibliográficos
Autor principal: Turazzini, Guillermo Fidel
Publicado: 2016
Materias:
fauna
fossil record
frog
taxonomy
Argentina
Anura
Neobatrachia
Odontophrynus
Odontophrynus americanus
Odontophrynus occidentalis
Vertebrata
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02724634_v36_n6_p_Turazzini
http://hdl.handle.net/20.500.12110/paper_02724634_v36_n6_p_Turazzini
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_02724634_v36_n6_p_Turazzini
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spelling paper:paper_02724634_v36_n6_p_Turazzini2023-06-08T15:25:15Z First fossil record of the South American frog genus Odontophrynus Reinhardt and Lütken, 1862 (Anura, Neobatrachia) Turazzini, Guillermo Fidel fauna fossil record frog taxonomy Argentina Anura Neobatrachia Odontophrynus Odontophrynus americanus Odontophrynus occidentalis Vertebrata The frog genus Odontophrynus comprises 10 species arranged in three species groups that inhabit southeastern South America. In Argentina, it is represented by the O. americanus and O. occidentalis species groups and, despite being a fairly common taxon of the extant herpetofauna, it has no known fossil record. Here we report on the first fossil record of the genus, based on an almost complete right ilium from the lower levels of the Buenos Aires Formation (OIS 11, Bonaerian age, middle Pleistocene) in the Bonaerian Pampas of Argentina. The taxonomic allocation is derived from a thorough survey of anuran ilia and is grounded in a set of distinct ilial characters that, in combination, do not occur in any other anuran. These include: ilium not fused to ischium; well-developed dorsal acetabular expansion; broad preacetabular zone with a shallow preacetabular fossa; straight ilial shaft lacking dorsal ridge; and spike-like dorsal prominence bearing a distinct dorsal protuberance. Additionally, after comparing with a large sample of specimens representing most species of Odontophrynus, we propose two main characters (high spike-like dorsal prominence, absence of a lateral knob on the dorsal prominence) that allow referral to Odontophrynus aff. O. americanus or O. cordobae. SUPPLEMENTAL DATA—Supplemental materials are available for this article for free at www.tandfonline.com/UJVP Citation for this article: Turazzini, G. F., M. L. Taglioretti, and R. O. Gómez. 2016. First fossil record of the South American frog genus Odontophrynus Reinhardt and Lütken, 1862 (Anura, Neobatrachia). Journal of Vertebrate Paleontology. DOI: 10.1080/02724634.2017.1228657. © 2016, by the Society of Vertebrate Paleontology. Fil:Turazzini, G.F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2016 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02724634_v36_n6_p_Turazzini http://hdl.handle.net/20.500.12110/paper_02724634_v36_n6_p_Turazzini
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic fauna
fossil record
frog
taxonomy
Argentina
Anura
Neobatrachia
Odontophrynus
Odontophrynus americanus
Odontophrynus occidentalis
Vertebrata
spellingShingle fauna
fossil record
frog
taxonomy
Argentina
Anura
Neobatrachia
Odontophrynus
Odontophrynus americanus
Odontophrynus occidentalis
Vertebrata
Turazzini, Guillermo Fidel
First fossil record of the South American frog genus Odontophrynus Reinhardt and Lütken, 1862 (Anura, Neobatrachia)
topic_facet fauna
fossil record
frog
taxonomy
Argentina
Anura
Neobatrachia
Odontophrynus
Odontophrynus americanus
Odontophrynus occidentalis
Vertebrata
description The frog genus Odontophrynus comprises 10 species arranged in three species groups that inhabit southeastern South America. In Argentina, it is represented by the O. americanus and O. occidentalis species groups and, despite being a fairly common taxon of the extant herpetofauna, it has no known fossil record. Here we report on the first fossil record of the genus, based on an almost complete right ilium from the lower levels of the Buenos Aires Formation (OIS 11, Bonaerian age, middle Pleistocene) in the Bonaerian Pampas of Argentina. The taxonomic allocation is derived from a thorough survey of anuran ilia and is grounded in a set of distinct ilial characters that, in combination, do not occur in any other anuran. These include: ilium not fused to ischium; well-developed dorsal acetabular expansion; broad preacetabular zone with a shallow preacetabular fossa; straight ilial shaft lacking dorsal ridge; and spike-like dorsal prominence bearing a distinct dorsal protuberance. Additionally, after comparing with a large sample of specimens representing most species of Odontophrynus, we propose two main characters (high spike-like dorsal prominence, absence of a lateral knob on the dorsal prominence) that allow referral to Odontophrynus aff. O. americanus or O. cordobae. SUPPLEMENTAL DATA—Supplemental materials are available for this article for free at www.tandfonline.com/UJVP Citation for this article: Turazzini, G. F., M. L. Taglioretti, and R. O. Gómez. 2016. First fossil record of the South American frog genus Odontophrynus Reinhardt and Lütken, 1862 (Anura, Neobatrachia). Journal of Vertebrate Paleontology. DOI: 10.1080/02724634.2017.1228657. © 2016, by the Society of Vertebrate Paleontology.
author Turazzini, Guillermo Fidel
author_facet Turazzini, Guillermo Fidel
author_sort Turazzini, Guillermo Fidel
title First fossil record of the South American frog genus Odontophrynus Reinhardt and Lütken, 1862 (Anura, Neobatrachia)
title_short First fossil record of the South American frog genus Odontophrynus Reinhardt and Lütken, 1862 (Anura, Neobatrachia)
title_full First fossil record of the South American frog genus Odontophrynus Reinhardt and Lütken, 1862 (Anura, Neobatrachia)
title_fullStr First fossil record of the South American frog genus Odontophrynus Reinhardt and Lütken, 1862 (Anura, Neobatrachia)
title_full_unstemmed First fossil record of the South American frog genus Odontophrynus Reinhardt and Lütken, 1862 (Anura, Neobatrachia)
title_sort first fossil record of the south american frog genus odontophrynus reinhardt and lütken, 1862 (anura, neobatrachia)
publishDate 2016
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02724634_v36_n6_p_Turazzini
http://hdl.handle.net/20.500.12110/paper_02724634_v36_n6_p_Turazzini
work_keys_str_mv AT turazziniguillermofidel firstfossilrecordofthesouthamericanfroggenusodontophrynusreinhardtandlutken1862anuraneobatrachia
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