A new paleogene pipid frog from northwestern patagonia

Numerous isolated and fragmentary remains of a pipid frog from Paleocene-Eocene lacustrine beds of the Vaca Mahuida Formation are described and referred to a new species of the genus Shelania Casamiquela. A cladistic analysis of fossil and extant pipoid frogs based on 47 osteological characters plac...

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Publicado: 1998
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02724634_v18_n3_p511_Baez
http://hdl.handle.net/20.500.12110/paper_02724634_v18_n3_p511_Baez
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_02724634_v18_n3_p511_Baez
record_format dspace
spelling paper:paper_02724634_v18_n3_p511_Baez2023-06-08T15:25:08Z A new paleogene pipid frog from northwestern patagonia Numerous isolated and fragmentary remains of a pipid frog from Paleocene-Eocene lacustrine beds of the Vaca Mahuida Formation are described and referred to a new species of the genus Shelania Casamiquela. A cladistic analysis of fossil and extant pipoid frogs based on 47 osteological characters places the new species in a trichotomy with the South American Paleogene pipids S. pascuali and “Xenopus” romeri. These three species share a seemingly derived arrangement of perilymphatic and jugular foramina in the occipital region. The species described herein, “X” romeri and, presumably, S. pascuali lack discrete superior perilymphatic foramina as in extant African xenopodines; however, they possess several plesiomorphic conditions with respect to the latter. The presence of a pipid lineage distinct to that represented by extant taxa in South America is confirmed by this study. © 1998 by the society of vertebrate paleontology. 1998 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02724634_v18_n3_p511_Baez http://hdl.handle.net/20.500.12110/paper_02724634_v18_n3_p511_Baez
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description Numerous isolated and fragmentary remains of a pipid frog from Paleocene-Eocene lacustrine beds of the Vaca Mahuida Formation are described and referred to a new species of the genus Shelania Casamiquela. A cladistic analysis of fossil and extant pipoid frogs based on 47 osteological characters places the new species in a trichotomy with the South American Paleogene pipids S. pascuali and “Xenopus” romeri. These three species share a seemingly derived arrangement of perilymphatic and jugular foramina in the occipital region. The species described herein, “X” romeri and, presumably, S. pascuali lack discrete superior perilymphatic foramina as in extant African xenopodines; however, they possess several plesiomorphic conditions with respect to the latter. The presence of a pipid lineage distinct to that represented by extant taxa in South America is confirmed by this study. © 1998 by the society of vertebrate paleontology.
title A new paleogene pipid frog from northwestern patagonia
spellingShingle A new paleogene pipid frog from northwestern patagonia
title_short A new paleogene pipid frog from northwestern patagonia
title_full A new paleogene pipid frog from northwestern patagonia
title_fullStr A new paleogene pipid frog from northwestern patagonia
title_full_unstemmed A new paleogene pipid frog from northwestern patagonia
title_sort new paleogene pipid frog from northwestern patagonia
publishDate 1998
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02724634_v18_n3_p511_Baez
http://hdl.handle.net/20.500.12110/paper_02724634_v18_n3_p511_Baez
_version_ 1768541843087163392

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