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Related Experiment Videos

Anthropoid origins

R F Kay1, C Ross, B A Williams

  • 1Department of Biological Anthropology and Anatomy, Box 3170, Duke University Medical Center, Durham, NC 27710, USA.

Science (New York, N.Y.)
|February 7, 1997
PubMed
Summary
This summary is machine-generated.

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New material of Qatrania from Egypt with comments on the phylogenetic position of the parapithecidae (primates, Anthropoidea).

American journal of primatology·2020

Early primate fossil discoveries reveal insights into the evolution of Anthropoidea (human suborder). Key findings include the ancient haplorhine-strepsirrhine split and the primitive nature of eosimiids.

Area of Science:

  • Paleontology
  • Primatology
  • Evolutionary Biology

Background:

  • Recent fossil discoveries have expanded understanding of early Anthropoidea morphology and diversity.
  • Phylogenetic analysis of fossil and extant taxa informs primate evolutionary history.

Purpose of the Study:

  • To analyze the phylogenetic relationships of early primates.
  • To reconstruct the functional morphology and adaptive shifts of stem haplorhines and anthropoids.

Main Methods:

  • Phylogenetic analysis of fossil and Recent primate taxa.
  • Functional analysis of inferred ancestral traits and locomotion.

Main Results:

  • The haplorhine-strepsirrhine dichotomy predates the earliest Eocene fossil primates.

Related Experiment Videos

  • Eosimiids from the middle Eocene of China are identified as primitive anthropoids.
  • Stem haplorhines were likely small, nocturnal, arboreal insectivore-frugivores with scurrying-leaping locomotion.

    • Conclusions:

    • A fundamental adaptive shift from nocturnality to diurnality occurred at the base of the tarsier-eosimiid-anthropoid clade.
    • Early anthropoids were diurnal, arboreal quadrupeds with a tendency towards herbivory in some lineages.