Non-metric features in the ulna of Aegyptopithecus, Alouatta, Ateles, and Lagothrix.
A comparison of the non-metric features of the ulnar fragment (YPM 23940) referred to Aegyptopithecus zeuxis with those in the same bone of Alouatta, Ateles, and Lagothrix -- the three living taxa whose ulnae most closely resemble that of the fossil -- reveals that the closest similarities of the fragment are with the ulna of Alouatta.
D000508:Alouatta; D000818:Animals; D000882:Haplorhini; D010163:Paleontology; D011323:Primates; D014457:Ulna / Q000033:anatomy & histology*