New rodents (Mammalia) from the late Oligocene of Cabeza Blanca (Chubut) and the first rodent radiation in Patagonia

Caviomorph rodents, the New World Hystricognathi, are one of the most characteristic groups of South American mammals. Although they have been in the continent at least since the middle Eocene, those of the Deseadan Land mammal Age (early–late Oligocene) are the best source to understanding their ea...

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Detalles Bibliográficos
Autores principales: Vucetich, María Guiomar, Dozo, María Teresa, Arnal, Michelle, Pérez, María Encarnación
Formato: Articulo
Lenguaje:Inglés
Publicado: 2015
Materias:
Paleontología
Caviomorpha
Taxonomy
South America
Deseadan SALMA
Cenozoic
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/127608
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-127608
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Paleontología
Caviomorpha
Taxonomy
South America
Deseadan SALMA
Cenozoic
spellingShingle Paleontología
Caviomorpha
Taxonomy
South America
Deseadan SALMA
Cenozoic
Vucetich, María Guiomar
Dozo, María Teresa
Arnal, Michelle
Pérez, María Encarnación
New rodents (Mammalia) from the late Oligocene of Cabeza Blanca (Chubut) and the first rodent radiation in Patagonia
topic_facet Paleontología
Caviomorpha
Taxonomy
South America
Deseadan SALMA
Cenozoic
description Caviomorph rodents, the New World Hystricognathi, are one of the most characteristic groups of South American mammals. Although they have been in the continent at least since the middle Eocene, those of the Deseadan Land mammal Age (early–late Oligocene) are the best source to understanding their early history due of their good record, large geographic distribution and good temporal calibration of many of the local faunas. Here, we describe the following new taxa from the classical locality of Cabeza Blanca: Octodontoidea Acaremyidae Galileomys baios n. sp., Octodontoidea incertae sedis Ethelomys loomisi n. gen., n. comb., Acarechimys leucotheae n. sp., Protacaremys? adilos n. sp., Chinchilloidea incertae sedis Loncolicu tretos n. gen., n. sp., Incamys menniorum n. sp., Caviomorpha incertae sedis Llitun notuca n. gen., n. sp., Leucokephalos zeffiae n. gen., n. sp. and Cephalomyidae Cephalomys ceciae n. sp. The DP4 of an ‘eocardiid’, Asteromys punctus? is described for the first time. These new taxa allow us to reinterpret the relationships of some of the previously known Deseadan species and genera. They show a great early diversification at least for extra Andean Patagonia, involving at least three of the main caviomorph lineages: octodontoids, chinchilloids and cavioids.
format Articulo
Articulo
author Vucetich, María Guiomar
Dozo, María Teresa
Arnal, Michelle
Pérez, María Encarnación
author_facet Vucetich, María Guiomar
Dozo, María Teresa
Arnal, Michelle
Pérez, María Encarnación
author_sort Vucetich, María Guiomar
title New rodents (Mammalia) from the late Oligocene of Cabeza Blanca (Chubut) and the first rodent radiation in Patagonia
title_short New rodents (Mammalia) from the late Oligocene of Cabeza Blanca (Chubut) and the first rodent radiation in Patagonia
title_full New rodents (Mammalia) from the late Oligocene of Cabeza Blanca (Chubut) and the first rodent radiation in Patagonia
title_fullStr New rodents (Mammalia) from the late Oligocene of Cabeza Blanca (Chubut) and the first rodent radiation in Patagonia
title_full_unstemmed New rodents (Mammalia) from the late Oligocene of Cabeza Blanca (Chubut) and the first rodent radiation in Patagonia
title_sort new rodents (mammalia) from the late oligocene of cabeza blanca (chubut) and the first rodent radiation in patagonia
publishDate 2015
url http://sedici.unlp.edu.ar/handle/10915/127608
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