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Mandibular remains ofProcardiomys martinoiPascual, 1961 (Hystricognathi, Cavioidea) from the Arroyo Chasicó Formation (early late Miocene) of Argentina: anatomy and the phylogenetic position of the genus within Caviidae
- Source :
- CIC Digital (CICBA), Comisión de Investigaciones Científicas de la Provincia de Buenos Aires, instacron:CICBA
- Publication Year :
- 2012
- Publisher :
- Informa UK Limited, 2012.
-
Abstract
- Hydrochoerinae is a clade of caviomorph rodents broadly distributed in South America, which includes the maximum body size recorded among extant rodent taxa. The most basal forms of this group are an assemblage of small to medium body size extinct taxa with a plesiomorphic dentition, traditionally clustered in the group cardiomyines. One of the oldest known cardiomyine is Procardiomys martinoi (Chasicoan South American Land Mammal Age SALMA; early late Miocene), which was known only from the holotype, a fragmentary palate with the left and right molar series. New mandibular remains from the Arroyo Chasicó Formation (Chasicoan SALMA) are described and identified here as belonging to P. martinoi because they share a unique combination of characters (as well matching in size) with the upper dentition of the holotype. These materials help in critically reviewing the taxonomic identification of the mandibular remains previously assigned to Procardiomys and allow testing the phylogenetic affinities of this taxon within Caviidae. P. martinoi is depicted as one of the most basal forms of Hydrochoerinae, placed basally on the lineage leading to extant capybaras after the split between the common ancestor of Kerodon and Hydrochoerus. Fil: Perez, Margarita E.. Museo Paleontológico Egidio Feruglio; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Vucetich, María Guiomar. Universidad Nacional de la Plata. Facultad de Ciencias Naturales y Museo. División Paleontología Vertebrados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina Fil: Deschamps, Cecilia Marcela. Universidad Nacional de la Plata. Facultad de Ciencias Naturales y Museo. División Paleontología Vertebrados; Argentina. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; Argentina
- Subjects :
- biology
Dentition
PROCARDIOMYS
PHYLOGENY
CAVIIDAE
Hystricognathi
Holotype
Zoology
Zoología, Ornitología, Entomología, Etología
Miocene
Late Miocene
biology.organism_classification
CHASICOAN
Ciencias de la Tierra y relacionadas con el Medio Ambiente
Taxon
Genus
Hydrochoerinae
Meteorología y Ciencias Atmosféricas
General Agricultural and Biological Sciences
Clade
CIENCIAS NATURALES Y EXACTAS
Subjects
Details
- ISSN :
- 10292381 and 08912963
- Volume :
- 26
- Database :
- OpenAIRE
- Journal :
- Historical Biology
- Accession number :
- edsair.doi.dedup.....0a87f0a25f115bb3318d548bd2ee760d
- Full Text :
- https://doi.org/10.1080/08912963.2012.751383