New Primate Fossils from Late Oligocene (Colhuehuapian) Localities of Chubut Province, Argentina

1983/02/14 by John G. Fleagle, Thomas M. Bown · 4 citations
Agricultural and Biological Sciences · Earth and Planetary Sciences · Psychology · #Bat Biology and Ecology Studies #Evolution and Paleontology Studies #Primate Behavior and Ecology

paper · doi:10.1159/000156135

crossref issued 1983/02/14 · crossref published 1983/02/14 · crossref published-print 1983/02/14 · openalex publication_date 1983/02/14 · crossref created 2008/09/11 · crossref deposited 2022/03/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/06/11 · crossref indexed 2026/07/28

Abstract

New primate fossils have been recovered from the late Oligocene (Colhuehuapian) localities of Gaiman and Sacanana in Patagonian Argentina. The new fossils are provisionally allocated to Dolichocebus gaimanensis and Tremacebus harringtoni, the only primates previously described from these localities. These new dental remains are more primitive than the teeth of any previously known platyrrhines, living or fossil, and conform extremely well with the hypothetical ancestral morphotype for New World monkeys suggested by several authors. They are also very similar to the teeth of Oligocene catarrhines from Egypt such as Aegyptopithecus zeuxis.

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