Ape limb bone from the oligocene of Egypt

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Science  11 Jul 1975:
Vol. 189, Issue 4197, pp. 135-137
DOI: 10.1126/science.1138369


An ulna attributed to Aegyptopithecus zeuxis provides the first evidence for interpreting the locomotor behavior of the earliest apes. The fossil indicates that Aegyptopithecus was an arboreal quadruped and that the primitive hominoid locomotor pattern was most nearly analogous, among living primates, to that of Alouatta, the howler monkey.