Skip to main content

The fossil record of the short-faced bears (Ursidae, Tremarctinae) from Venezuela. Systematic, biogeographic, and paleoecological implications

Buy Article:

$39.00 plus tax (Refund Policy)

The first record of a Tremarctinae bear in Venezuela was made by Royo y Gómez in 1960. Since then, three new specimens from two localities have been collected but not reported. The purpose of this contribution is to discuss the taxonomy, biostratigraphy, and biogeographic implications of these records. The bear genera included in the subfamily Tremarctinae are distributed exclusively in America. In South America only one fossil genus is recorded, Arctotherium, comprising five species: A. angustidens, restricted to the Ensenadan (early – middle Pleistocene) of Argentina and Bolivia; A. vetustum, recorded only in the Bonaerian (middle Pleistocene) of Brazil and Argentina; two Bonaerian and Lujanian (middle Pleistocene – early Holocene) species, A. bonariense (recorded only in Argentina), and A. tarijense (occurring in Argentina, Bolivia, Uruguay and Chile); and A. wingei, recorded with certainty only in the Lujanian (late Pleistocene – early Holocene). After the present study we conclude that (1) A. wingei is the only species recorded in Venezuela, and (2) all known specimens have Lujanian provenance. Outside Venezuela, this species is recorded from Bolivia and Brazil but without precise stratigraphic data. Although A. wingei is one of the most plesiomorphic Arctotherium species, it has not been recorded in sediments older than late Pleistocene. This could be interpreted as species preference for low latitude tropical or subtropical environments, which are poorly represented in early Pleistocene continental sediments.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Data/Media
No Metrics

Keywords: ARCTOTHERIUM WINGEI; GUACHARO CAVE; MUACO; PLEISTOCENE; SOUTH AMERICA; TREMARCTINAE; URSIDAE; VENEZUELA

Document Type: Research Article

Publication date: 2007-06-01

More about this publication?
  • Neues Jahrbuch für Geologie und Paläontologie continuously publishes current original contributions from all fields of geology, ever since its foundation in 1807. All published contributions are in the English language.
  • Editorial Board
  • Information for Authors
  • Subscribe to this Title
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more