THE OLDEST SPECIES OF DIDELPHIS (MAMMALIA, MARSUPIALIA, DIDELPHIDAE), FROM THE LATE MIOCENE OF AMAZONIA

Mario A. Cozzuol; Francisco Goin; Martín De Los Reyes; Alceu Ranzi

doi:10.1644/05-MAMM-A-282R2.1

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Mario A. Cozzuol,^1,2 Francisco Goin,³ Martín De Los Reyes,³ Alceu Ranzi⁴

¹aLaboratório de Biologia Evolutiva e da Conservação, Universidade Federal de Rondônia–UNIR, BR 364,
²dPresent address of MAC: Laboratório de Paleontologia, Museu de Ciência e Tecnologia, PUCRS, Avenida
³bDivisión Paleontología Vertebrados, Museo de La Plata, Paseo del Bosque s/n, 1900 La Plata, Argenti
⁴cLaboratório de Pesquisas Paleontológicas, Universidade Federal do Acre–UFAC, 69915-900 Rio Branco,

Abstract

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 frugivorous habits than in other species of the genus.

Citation Download Citation

Mario A. Cozzuol, Francisco Goin, Martín De Los Reyes, and Alceu Ranzi "THE OLDEST SPECIES OF DIDELPHIS (MAMMALIA, MARSUPIALIA, DIDELPHIDAE), FROM THE LATE MIOCENE OF AMAZONIA," Journal of Mammalogy 87(4), 663-667, (1 August 2006). https://doi.org/10.1644/05-MAMM-A-282R2.1

Accepted: 1 January 2006; Published: 1 August 2006

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