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...
Guardado en:
Autores principales: | , |
---|---|
Formato: | JOUR |
Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_02724634_v18_n3_p511_Baez |
Aporte de: |
id |
todo:paper_02724634_v18_n3_p511_Baez |
---|---|
record_format |
dspace |
spelling |
todo:paper_02724634_v18_n3_p511_Baez2023-10-03T15:15:03Z A new paleogene pipid frog from northwestern patagonia Baez, A.M. Pugener, L.A. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar 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. |
format |
JOUR |
author |
Baez, A.M. Pugener, L.A. |
spellingShingle |
Baez, A.M. Pugener, L.A. A new paleogene pipid frog from northwestern patagonia |
author_facet |
Baez, A.M. Pugener, L.A. |
author_sort |
Baez, A.M. |
title |
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 |
url |
http://hdl.handle.net/20.500.12110/paper_02724634_v18_n3_p511_Baez |
work_keys_str_mv |
AT baezam anewpaleogenepipidfrogfromnorthwesternpatagonia AT pugenerla anewpaleogenepipidfrogfromnorthwesternpatagonia AT baezam newpaleogenepipidfrogfromnorthwesternpatagonia AT pugenerla newpaleogenepipidfrogfromnorthwesternpatagonia |
_version_ |
1782023781512904704 |