The fossil record of South American short-faced bears (Ursidae, Tremarctinae)
By L. Soibelzon, E. Tonni, M. Bond. 2005
102 citations recorded by the source corpus.
Abstract The present study includes a review of the geographic and stratigraphic distribution of short-faced bears (Ursidae, Tremarctinae) in South America. In addition, the authors discuss biogeographic hypotheses regarding the origin of South American tremarctines. The Tremarctinae subfamily is distributed exclusively in America, from Alaska to southern Patagonia. Its biochron comprises the temporal lapse between Late Miocene and recent times; the first record of Tremarctinae in North America corresponds to the Hemphillian and the last to the Rancholabrean. In South America, the first record corresponds to the Ensenadan. In the present day, it corresponds to the only living tremarctine, the ‘Andean Bear,’ but short-faced bears became extinct during the early Holocene. The extinction of short-faced bears in North and South America appears to have been approximately synchronous. Finally, the fossil record in South America indicates species turnover between the Ensenadan and Bonaerian, during which time the giant species Arctotherium angustidens was replaced by Arctotherium tarijense, Arctotherium bonaeriense, and Arctotherium vetustum (and probably Arctotherium wingei).
Subfields: Anthropology, Paleontology
View Paper: https://www.semanticscholar.org/paper/a08b825b467ed1f80871e800119b7e8d81e0af93
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Anthropology
In Paleontology
Citations in the corpus
- Did Humans Cause the Late Pleistocene-Early Holocene Mammalian Extinctions in South America in a Context of Shrinking Open Areas? (2009, background): “It is represented by the boundary between the Mesotherium cristatum and Megatherium americanum biozones in the stratigraphic sections of the Pampean area and in Bolivia (Cione and Tonni, 1999; Cione et al., 1999; MacFadden, 2000; Soibelzon et al., 2005; Cione and Tonni, 2005; Fig 7.1).”