A new guinea pig (Rodentia, Caviomorpha) from northwestern Argentina: implications for the origin of the genus Cavia

We describe a new caviomorph rodent, Cavia cabrerai, sp. nov. (Caviidae, Caviinae), from the upper levels of Andalhuala Formation (San Fernando Norte locality, Catamarca Province, northwestern Argentina), which represents the oldest fossil record of the genus. The new species differs from extant and...

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Autores principales: Candela, Adriana Magdalena, Bonini, Ricardo Adolfo
Formato: Artículo publishedVersion
Lenguaje:Inglés
Publicado: Society of Vertebrate Paleontology 2017
Materias:
Caviidae
Neógeno
Catamarca
Dated
Paleontología
Ciencias de la Tierra y relacionadas con el Medio Ambiente
CIENCIAS NATURALES Y EXACTAS
Acceso en línea:http://hdl.handle.net/11336/58708
http://suquia.ffyh.unc.edu.ar/handle/11336/58708
Aporte de:
Suquía - Instituto de Antropología de Córdoba (IDACOR, CONICET y UNC) de Universidad Nacional de Córdoba
id I10-R181-11336-58708
record_format dspace
institution Universidad Nacional de Córdoba
institution_str I-10
repository_str R-181
collection Suquía - Instituto de Antropología de Córdoba (IDACOR, CONICET y UNC)
language Inglés
topic Caviidae
Neógeno
Catamarca
Dated
Paleontología
Ciencias de la Tierra y relacionadas con el Medio Ambiente
CIENCIAS NATURALES Y EXACTAS
spellingShingle Caviidae
Neógeno
Catamarca
Dated
Paleontología
Ciencias de la Tierra y relacionadas con el Medio Ambiente
CIENCIAS NATURALES Y EXACTAS
Candela, Adriana Magdalena
Bonini, Ricardo Adolfo
A new guinea pig (Rodentia, Caviomorpha) from northwestern Argentina: implications for the origin of the genus Cavia
topic_facet Caviidae
Neógeno
Catamarca
Dated
Paleontología
Ciencias de la Tierra y relacionadas con el Medio Ambiente
CIENCIAS NATURALES Y EXACTAS
description We describe a new caviomorph rodent, Cavia cabrerai, sp. nov. (Caviidae, Caviinae), from the upper levels of Andalhuala Formation (San Fernando Norte locality, Catamarca Province, northwestern Argentina), which represents the oldest fossil record of the genus. The new species differs from extant and extinct species of Cavia by a unique combination of characters: large size, proportionally anteroposteriorly elongated molars, slightly anteroposteriorly compressed prisms, relatively shallow primary lingual flexids, abundant cement in the lingual flexids, and anterolingual widening of the second crests of cheek teeth. A phylogenetic analysis indicates that Cavia cabrerai, sp. nov., is the sister taxon of extant Cavia species and displays dental characters more plesiomorphic than the latter. Some characters of C. cabrerai, sp. nov., namely, compression of prisms and depth of flexids, are morphologically intermediate between the related extinct Caviinae Palaeocavia and the extant species of Cavia. An ash bed dated at 4.72 ± 0.08 Ma that overlies the fossiliferous level of the new material supports the presence of Cavia close to the Miocene-Pliocene boundary. The origin of Cavia may have been triggered by the expansion of relatively open and arid environments that arose near the Miocene-Pliocene boundary.http://zoobank.org/urn:lsid:zoobank.org:pub:3A6E6666-1FBE-4C6E-95CA-4B33927A414D SUPPLEMENTAL DATA—Supplemental materials are available for this article for free at www.tandfonline.com/UJVP Citation for this article: Candela, A. M., and R. A. Bonini. 2017. A new guinea pig (Rodentia, Caviomorpha) from northwestern Argentina: Implications for the origin of the genus Cavia.
format Artículo
Artículo
publishedVersion
author Candela, Adriana Magdalena
Bonini, Ricardo Adolfo
author_facet Candela, Adriana Magdalena
Bonini, Ricardo Adolfo
author_sort Candela, Adriana Magdalena
title A new guinea pig (Rodentia, Caviomorpha) from northwestern Argentina: implications for the origin of the genus Cavia
title_short A new guinea pig (Rodentia, Caviomorpha) from northwestern Argentina: implications for the origin of the genus Cavia
title_full A new guinea pig (Rodentia, Caviomorpha) from northwestern Argentina: implications for the origin of the genus Cavia
title_fullStr A new guinea pig (Rodentia, Caviomorpha) from northwestern Argentina: implications for the origin of the genus Cavia
title_full_unstemmed A new guinea pig (Rodentia, Caviomorpha) from northwestern Argentina: implications for the origin of the genus Cavia
title_sort new guinea pig (rodentia, caviomorpha) from northwestern argentina: implications for the origin of the genus cavia
publisher Society of Vertebrate Paleontology
publishDate 2017
url http://hdl.handle.net/11336/58708
http://suquia.ffyh.unc.edu.ar/handle/11336/58708
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