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Artículo

A new acaremyid rodent (Caviomorpha, Octodontoidea) from Scarritt Pocket, Deseadan (late Oligocene) of Patagonia (Argentina)

Vucetich, Maria GuiomarIcon ; Perez, Maria EncarnacionIcon ; Ciancio, Martin RicardoIcon ; Carlini, Alfredo ArmandoIcon ; Madden, Richard H.; Kohn, Matthew
Fecha de publicación: 05/2014
Editorial: Society Of Vertebrate Paleontology
Revista: Journal Of Vertebrate Paleontology
ISSN: 0272-4634
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Paleontología

Resumen

Octodontoidea is the most diverse caviomorph clade presently represented in South America by Octodontidae, Echimyidae and Abrocomidae. Some evidences suggests that in the past they were taxonomically even more diverse, including several independent lineages with no modern representatives, sometimes considered as families. One of them is Acaremyidae, known until now from the Colhuehuapian?Colloncuran (early to early-middle Miocene) of Patagonia. Here we describe a new octodontoid rodent from the Deseadan (late Oligocene) of Scarritt Pocket (Patagonia): Changquin woodi gen. et sp. nov. Cladistic analysis indicates that the new species is an acaremyid related to the Santacrucian (early Miocene) Sciamys. Acaremyidae was recovered as a monophyletic group. C. woodi gen et sp. nov. the oldest representative of Acaremyidae, extends the family biochron back to the late Oligocene, and indicates that acaremyids differentiated before the Deseadan. C. woodi represents the first Deseadan octodontoid displaying protohypsodont cheek teeth, showing that the Deseadan was a period of important diversification for octodontoids as it was for the cavioids. C. woodi adds a new element to the faunal differences observed between Patagonian and Bolivian Deseadan faunas. A new U-Pb LA-ICPMS date (27.17 +/- 0.54 Ma) for Scarritt Pocket is provided.
Palabras clave: Octodontoidea , Acaremyidae , Phylogeny , Patagonia
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/17973
URL: http://dx.doi.org/ www.tandfonline.com/ujvp
DOI: http://dx.doi.org/10.1080/02724634.2013.804414
Colecciones
Articulos(CCT - LA PLATA)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - LA PLATA
Articulos(SEDE CENTRAL)
Articulos de SEDE CENTRAL
Citación
Vucetich, Maria Guiomar; Perez, Maria Encarnacion; Ciancio, Martin Ricardo; Carlini, Alfredo Armando; Madden, Richard H.; et al.; A new acaremyid rodent (Caviomorpha, Octodontoidea) from Scarritt Pocket, Deseadan (late Oligocene) of Patagonia (Argentina); Society Of Vertebrate Paleontology; Journal Of Vertebrate Paleontology; 34; 3; 5-2014; 689-698
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