The Jurassic Thalattosuchia (Crocodyliformes) of Chile; a paleobiogeographic approach

The thalattosuchian fossils from the Jurassic of Chile are revised. Some specimens, dating from the Lower Lias (Sinemurian), are the oldest known thalattosuchians, but are too fragmentary to establish a precise taxonomic placement. New specimen related to the genus Metriorhynchus is described from t...

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Detalles Bibliográficos
Autores principales: Brandoni de Gasparini, Zulma Nélida, Vignaud, Patrick, Chong, Guillermo
Formato: Articulo
Lenguaje:Inglés
Publicado: 2000
Materias:
Paleontología
Jurassic
Thalattosuchia
Chile
Systematic
Paleobiogeography
Jurassique
Chili
Systématique
Paléobiogéographie
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/123708
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-123708
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Paleontología
Jurassic
Thalattosuchia
Chile
Systematic
Paleobiogeography
Jurassique
Thalattosuchia
Chili
Systématique
Paléobiogéographie
spellingShingle Paleontología
Jurassic
Thalattosuchia
Chile
Systematic
Paleobiogeography
Jurassique
Thalattosuchia
Chili
Systématique
Paléobiogéographie
Brandoni de Gasparini, Zulma Nélida
Vignaud, Patrick
Chong, Guillermo
The Jurassic Thalattosuchia (Crocodyliformes) of Chile; a paleobiogeographic approach
topic_facet Paleontología
Jurassic
Thalattosuchia
Chile
Systematic
Paleobiogeography
Jurassique
Thalattosuchia
Chili
Systématique
Paléobiogéographie
description The thalattosuchian fossils from the Jurassic of Chile are revised. Some specimens, dating from the Lower Lias (Sinemurian), are the oldest known thalattosuchians, but are too fragmentary to establish a precise taxonomic placement. New specimen related to the genus Metriorhynchus is described from the lower Bajocian. It is the oldest representative of the genus and fills an important gap in our knowledge of the paleogeographic history of this group. Other new cranial fragments, related to the Callovian species Metriorhynchus casamiquelai, are described and this species is revised in the light of new studies on the intraspecific variability in extant crocodilians. Up until now, the known distribution of Liassic Thalattosuchia suggested a circumpacific distribution with minimally episodic passages through the Caribbean Corridor. Nevertheless, the close affinities between the South American and the European Metriorhynchidae from the Callovian to the Tithonian suggest the possibility that more and more frequent communications were made via the Caribbean Corridor. The new data corroborate the hypothesis formulated from the invertebrate faunas.
format Articulo
Articulo
author Brandoni de Gasparini, Zulma Nélida
Vignaud, Patrick
Chong, Guillermo
author_facet Brandoni de Gasparini, Zulma Nélida
Vignaud, Patrick
Chong, Guillermo
author_sort Brandoni de Gasparini, Zulma Nélida
title The Jurassic Thalattosuchia (Crocodyliformes) of Chile; a paleobiogeographic approach
title_short The Jurassic Thalattosuchia (Crocodyliformes) of Chile; a paleobiogeographic approach
title_full The Jurassic Thalattosuchia (Crocodyliformes) of Chile; a paleobiogeographic approach
title_fullStr The Jurassic Thalattosuchia (Crocodyliformes) of Chile; a paleobiogeographic approach
title_full_unstemmed The Jurassic Thalattosuchia (Crocodyliformes) of Chile; a paleobiogeographic approach
title_sort jurassic thalattosuchia (crocodyliformes) of chile; a paleobiogeographic approach
publishDate 2000
url http://sedici.unlp.edu.ar/handle/10915/123708
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