Dictionary of Human Evolution and Biology

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Aegyptopithecus Simons, 1965

Extinct genus of largest and best known of the haplorhines of the Oligocene epoch (c. 34-33 mya); recovered from the Fayum Depression, Egypt; member of family Propliopithecidae. Completely anthropoid in characteristics such as closed orbits, fusion of frontal and mandibular bones. Highly sexually dimorphic; sagittal crest and long canines present in males. Small orbits indicate diurnal habits. Brain size about 30 cm3, and comparable with that of extant prosimians. Elongated maxilla; dental formula: 2.1.2.3; dentition suggests frugivory. Estimated body mass 6-8 kg. Monotypic; the only known species is A. zeuxis, which has affinities with both monkeys and apes; it could be ancestral to one or both of these groups. Some authorities now include Aegyptopithecus in Propliopithecus. aeolian: alternative spelling of eolian.

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