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Evolutionary history of the Cercopithecidae

E Delson

    Contributions to Primatology
    |January 1, 1975
    PubMed
    Summary

    Cladistic analysis reveals four dental and two cranial morphotypes in Old World monkeys (Cercopithecidae). Fossil comparisons indicate parapithecids are not closely related to monkeys, while some Fayum hominoids may share features with them.

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    Area of Science:

    • Primatology
    • Paleontology
    • Evolutionary Biology

    Background:

    • Old World monkeys (Cercopithecidae) exhibit diverse dental and cranial morphology.
    • Understanding their evolutionary relationships requires detailed analysis of both extant and fossil taxa.

    Purpose of the Study:

    • To apply cladistic methods to distinguish morphotypes within Cercopithecidae.
    • To investigate the phylogenetic positions of Fayum primates and early fossil cercopithecids.

    Main Methods:

    • Utilized cladistic analysis focusing on shared derived characters.
    • Compared dental and cranial morphotypes of extant Cercopithecidae with fossil evidence.

    Main Results:

    • Identified four dental and two cranial morphotypes in Cercopithecidae.
    • Fayum parapithecids show no special relationship to Old World monkeys; some Fayum hominoids may share derived traits with monkeys.
    • Miocene Victoriapithecus may represent a stage near the Colobinae-Cercopithecinae split.
    • African colobines form a monophyletic group; Asian forms may relate to European colobines.
    • Papionini diversified into geladas, Papio-related baboons, and macaque relatives, each with subsequent radiations.

    Conclusions:

    • Cladistic analysis provides a framework for understanding Cercopithecidae evolution.
    • Fossil evidence refines hypotheses on primate phylogeny, particularly regarding early hominoids and cercopithecid divergences.

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