The oldest species of Didelphis (Mammalia, Marsupialia, Didelphidae), from the late Miocene of Amazonia

The oldest known species of the genus Didelphis (Mammalia, Marsupialia, Didelphidae) is described here. The holotype and only known specimen comes from the late Miocene deposits of the Solimões Formation at Patos, Acre River, Brazil. The new species is one of only a few marsupials known from this as...

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Detalles Bibliográficos
Autores: Cozzuol, Mario Alberto, Goin, Francisco Javier, Reyes, Martín Leonardo de los, Ranzi, Alceu
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2006
País:Argentina
Institución:Universidad Nacional de La Plata
Repositorio:SEDICI (UNLP)
Idioma:inglés
OAI Identifier:oai:sedici.unlp.edu.ar:10915/83222
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/83222
Access Level:acceso abierto
Palabra clave:Paleontología
Acre
Amazon
Didelphis
Late Miocene
Descripción
Sumario:The oldest known species of the genus Didelphis (Mammalia, Marsupialia, Didelphidae) is described here. The holotype and only known specimen comes from the late Miocene deposits of the Solimões Formation at Patos, Acre River, Brazil. The new species is one of only a few marsupials known from this assemblage. The new species differs from other known species by its smaller size, low mandibular ramus, smaller molars relative to premolars, and p3 with inflated crown. The last feature suggests more fmgivorous habits than in other species of the genus. © 2006 American Society of Mammalogists.