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dc.contributor.author
Gomez, Raul Orencio
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dc.date.available
2018-09-13T17:49:39Z
dc.date.issued
2016-07
dc.identifier.citation
Gomez, Raul Orencio; A new pipid frog from the Upper Cretaceous of Patagonia and early evolution of crown-group Pipidae; Academic Press Ltd - Elsevier Science Ltd; Cretaceous Research; 62; 7-2016; 52-64
dc.identifier.issn
0195-6671
dc.identifier.uri
http://hdl.handle.net/11336/59544
dc.description.abstract
Pipid frogs are fully aquatic frogs that today inhabit freshwater environments of southern continents on both sides of the Atlantic Ocean, with a fairly good fossil record dating back to the Cretaceous. Here I report on fossils from the Allen Formation (upper Campanian-lower Maastrichtian), Río Negro Province, Argentina, that are ascribed to a new genus and species of pipid. In order to assess the evolutionary relationships of the new taxon, which is represented by sphenethmoids, otic capsules, ilia, humeri, and vertebrae, cladistic analyses of a data matrix of 165 osteological characters scored for 36 taxa were performed. The results are congruent with previous hypotheses of pipoid interrelationships and consistently place the new taxon as part of the lineage today represented by the African xenopodines. Temporal calibration of the phylogenetic tree based on the fossil record imply that the origin and early diversification of crown-group Pipidae might have occurred during the Early Cretaceous, prior to the final breakup of western Gondwana. This study highlights the importance of including fossils, even fragmentary ones, directly in phylogenetic analyses in order to disentangling how, when, and where pipid frogs diversified.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Academic Press Ltd - Elsevier Science Ltd
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject
Allen Formation
dc.subject
Anura
dc.subject
Palaeobiogeography
dc.subject
Patagonia
dc.subject
Phylogeny
dc.subject
Pipidae
dc.subject.classification
Paleontología
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dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
A new pipid frog from the Upper Cretaceous of Patagonia and early evolution of crown-group Pipidae
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-09-13T13:14:58Z
dc.journal.volume
62
dc.journal.pagination
52-64
dc.journal.pais
Estados Unidos
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dc.description.fil
Fil: Gomez, Raul Orencio. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ciencias Geológicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; Argentina
dc.journal.title
Cretaceous Research
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0195667116300180
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.cretres.2016.02.006
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