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dc.contributor.author
Arnal, Michelle
dc.contributor.author
Pérez, María Encarnación
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Tejada Medina, Luz Marina
dc.contributor.author
Campbell, Kenneth E.
dc.date.available
2023-04-03T11:32:19Z
dc.date.issued
2022-01
dc.identifier.citation
Arnal, Michelle; Pérez, María Encarnación; Tejada Medina, Luz Marina; Campbell, Kenneth E.; The high taxonomic diversity of the Palaeogene hystricognath rodents (Caviomorpha) from Santa Rosa (Peru, South America) framed within a new geochronological context; Taylor & Francis; Historical Biology; 34; 12; 1-2022; 2350-2373
dc.identifier.issn
0891-2963
dc.identifier.uri
http://hdl.handle.net/11336/192405
dc.description.abstract
Hystricognath rodents arrived in South America from Africa during the Paleogene. The oldest South American rodents (Caviomorpha) were intensively studied in recent years. One of these assemblages is the caviomorph paleofauna from Santa Rosa, Peru. Their age was originally estimated as ?Eocene. Here, we report new caviomorph fossils from Santa Rosa and review the previously described rodents taking into account new dates and updated caviomorph information. We identified 18 genera and 22 species, including one new genus and species (Vucetichimys pretrilophodoncia gen. et sp. nov.), and two new species (Shapajamys minor sp. nov. and Ucayalimys amahuacensis sp. nov.). All taxa are brachydont, with visible cusps, and thin crests. The Santa Rosa rodents are one of the oldest and the most diverse caviomorph paleofaunas known from low latitudes of South America. Similarities between these caviomorphs and other Paleogene assemblages lead us to propose an early Oligocene age for those rodents from the Yurúa River (Brazil) and a close temporal relationship with the oldest known levels from Contamana. This new biochronological scenario has deep implications in the origin and early evolution of caviomorphs. A middle Eocene? entrance of one or several waves of African rodents arriving in South America is possible.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Taylor & Francis
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
CAVIOMORPHA
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DENTAL MORPHOLOGY
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EOCENE
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OLIGOCENE
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PERU
dc.subject.classification
Paleontología
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
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CIENCIAS NATURALES Y EXACTAS
dc.title
The high taxonomic diversity of the Palaeogene hystricognath rodents (Caviomorpha) from Santa Rosa (Peru, South America) framed within a new geochronological context
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2023-03-29T17:15:50Z
dc.identifier.eissn
1029-2381
dc.journal.volume
34
dc.journal.number
12
dc.journal.pagination
2350-2373
dc.journal.pais
Reino Unido
dc.description.fil
Fil: Arnal, Michelle. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Paleontología Vertebrados; Argentina
dc.description.fil
Fil: Pérez, María Encarnación. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Museo Paleontológico Egidio Feruglio; Argentina
dc.description.fil
Fil: Tejada Medina, Luz Marina. Instituto Geológico Minero y Metalúrgico; Perú
dc.description.fil
Fil: Campbell, Kenneth E.. Natural History Museum Of Los Angeles County; Estados Unidos
dc.journal.title
Historical Biology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1080/08912963.2021.2017916
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