A new generalized paucituberculatan marsupial from the oligocene of Bolivia and the origin of 'shrew-like' opossums

Journal Article (Journal Article)

Insights into the origin of 'shrew-like' oposssums of South America are gained thanks to a new fossil from the Oligocene Salla Beds in Bolivia. The specimen described here consists of a partial rostrum, palate and postcanine teeth, and shows several generalized features (cranial and dental) in the context of the Paucituberculata. On this basis we recognize Evolestes hadrommatos gen. et sp. nov. In order to evaluate the affinities of the new taxon, we performed a phylogenetic analysis including representatives of the Caenolestidae, Pichipilus and allies (not regarded here as caenolestids), Palaeothentidae, and Abderitidae, with three outgroups. Evolestes is the basalmost 'caenolestoid', and provides clues to the morphological changes involved in the origin of caenolestids. © 2007 The Palaeontological Association.

Full Text

Duke Authors

Cited Authors

  • Goin, FJ; Sánchez-Villagra, MR; Abello, A; Kay, RF

Published Date

  • September 1, 2007

Published In

Volume / Issue

  • 50 / 5

Start / End Page

  • 1267 - 1276

Electronic International Standard Serial Number (EISSN)

  • 1475-4983

International Standard Serial Number (ISSN)

  • 0031-0239

Digital Object Identifier (DOI)

  • 10.1111/j.1475-4983.2007.00706.x

Citation Source

  • Scopus