Fossil mammals of the Quebrada de los Colorados Formation (late middle Eocene) at the locality of La Poma, Salta Province, Argentina

An anatomical and taxonomic analysis of the mammalian record in the locality of La Poma in Salta Province, Argentina, is here presented. This record consists in two specimens exhumed in levels of the Quebrada de los Colorados Formation referred to the middle late Eocene. The first specimen is repres...

Full description

Saved in:
Bibliographic Details
Published inHistorical biology Vol. 30; no. 4; pp. 507 - 517
Main Authors García-López, Daniel A., Deraco, Virginia, del Papa, Cecilia
Format Journal Article
LanguageEnglish
Published Abingdon Taylor & Francis Ltd 19.05.2018
Subjects
Dental materials
Dentition
Eocene
Fossils
New species
Paleogene
Rostrum
Teeth
Argentina
Online AccessGet full text

Cover

More Information
Summary:An anatomical and taxonomic analysis of the mammalian record in the locality of La Poma in Salta Province, Argentina, is here presented. This record consists in two specimens exhumed in levels of the Quebrada de los Colorados Formation referred to the middle late Eocene. The first specimen is represented by a partial skull preserving mostly the rostrum and some dental pieces and was identified as a member of Leontiniidae, although it does not bear enough information for generic or specific determination. The second specimen is represented by more complete material, preserving much of the dentition. It was identified as a new species of the genus Pampahippus, traditionally included in the paraphyletic family Notohippidae. The leontiniid here studied presents several plesiomorphic features identified in other taxa of northwestern Argentina, and this material represents a new example of a pre-Deseadan basal morphotype within the family. Regarding the new species of Pampahippus, it shows clear signs of rising hypsodonty, representing the first case for a notoungulate lineage in the Paleogene of northwestern Argentina.http://www.zoobank.org/urn:lsid:zoobank.org:pub:45D87764-5B63-4487-BAAC-74F8D490AE18
ISSN:0891-2963
1029-2381
DOI:10.1080/08912963.2017.1299150