Skip to main content
Journal cover image

Sexual dimorphism in early anthropoids.

Publication ,  Journal Article
Fleagle, JG; Kay, RF; Simons, EL
Published in: Nature
September 1980

Sexual dimorphism in canine/premolar tooth size and in body size is found among many species of living primates and has been shown to be correlated with social organization. Among extant higher primate species that normally live in the nuclear families consisting of a mated pair with their offspring, adult males and females are similar in body size and in the size of canine and anterior premolar teeth. In contrast, higher primate species living in more 'complex' polygynous groups (either single-male harems or multi-male groups) are characterized by sexual dimorphism in the size of canine/premolar teeth and frequently by body size dimorphism as well. We provide here the first evidence for sexual dimorphism in three species of primates from the Oligocene of Egypt--Aegyptopithecus zeuxis, Propliopithecus chirobates, and Apidium phiomense. This is the earliest record of sexual dimorphism among higher primates and suggests, by analogy with living species, that the earliest known fossil Old World anthropoids lived in polygynous (either single-male harems or multi-male groups) rather than monogamous social groups.

Duke Scholars

Altmetric Attention Stats
Dimensions Citation Stats

Published In

Nature

DOI

EISSN

1476-4687

ISSN

0028-0836

Publication Date

September 1980

Volume

287

Issue

5780

Start / End Page

328 / 330

Related Subject Headings

  • Sex Factors
  • Primates
  • Paleontology
  • Paleodontology
  • Mandible
  • Male
  • History, Ancient
  • Group Structure
  • General Science & Technology
  • Fossils
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Fleagle, J. G., Kay, R. F., & Simons, E. L. (1980). Sexual dimorphism in early anthropoids. Nature, 287(5780), 328–330. https://doi.org/10.1038/287328a0
Fleagle, J. G., R. F. Kay, and E. L. Simons. “Sexual dimorphism in early anthropoids.Nature 287, no. 5780 (September 1980): 328–30. https://doi.org/10.1038/287328a0.
Fleagle JG, Kay RF, Simons EL. Sexual dimorphism in early anthropoids. Nature. 1980 Sep;287(5780):328–30.
Fleagle, J. G., et al. “Sexual dimorphism in early anthropoids.Nature, vol. 287, no. 5780, Sept. 1980, pp. 328–30. Epmc, doi:10.1038/287328a0.
Fleagle JG, Kay RF, Simons EL. Sexual dimorphism in early anthropoids. Nature. 1980 Sep;287(5780):328–330.
Journal cover image

Published In

Nature

DOI

EISSN

1476-4687

ISSN

0028-0836

Publication Date

September 1980

Volume

287

Issue

5780

Start / End Page

328 / 330

Related Subject Headings

  • Sex Factors
  • Primates
  • Paleontology
  • Paleodontology
  • Mandible
  • Male
  • History, Ancient
  • Group Structure
  • General Science & Technology
  • Fossils