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  • Title: New primate fossils from late Oligocene (Colhuehuapian) localities of Chubut Province, Argentina.
    Author: Fleagle JG, Bown TM.
    Journal: Folia Primatol (Basel); 1983; 41(3-4):240-66. PubMed ID: 6368338.
    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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