Savage D E, Waters B T
Folia Primatol (Basel). 1978;30(1):1-29. doi: 10.1159/000155853.
A new omomyid primate, Arapahovius gazini, is represented by many jaws and teeth and a few tarsal bones from a 15-meter stratigraphic interval at the base of the uppermost one-third of the Main Body of the Wasatch Formation, south-central Wyoming, USA. This primate is a conspicuous element in a faunule which lived at about the same time as the fauna of the Lysite Member of the Wind River Formation, estimated to be in the interval 52-50 million years before present. Individuals referable to the new omomyid are chiefly specialized by the intricate corrugation of enamel on the occlusal surfaces of their incisors, premolars and molars and by relatively molariform posterior lower premolars. These specializations may be interpreted as adaptation toward a more herbivorous-frugivorous diet. The tarsal bones referred to Arapahovius suggest that animals in this genus were habitual leapers. This new omomyid bears 'omomyine' and 'anaptomorphine' characters and may have been derived from an earlier Wasatchian (earliest Eocene) 'anaptomorphine' such as Tetonoides pearcei Gazin. Arapahovius seems to have had no phylogenetic successors.
一种新的始镜猴科灵长类动物——加齐尼阿拉帕霍猴，其化石包括许多颌骨和牙齿以及几块跗骨，采自美国怀俄明州中南部瓦萨奇组主体最上部三分之一底部一个15米厚的地层间隔。这种灵长类动物是一个动物群中的显著成员，该动物群生活的时间与风河组利西特段动物群大致相同，估计距今5200万至5000万年。可归为这种新始镜猴科动物的个体主要特征在于其门齿、前磨牙和磨牙咬合面上复杂的釉质褶皱以及相对磨牙状的下后前磨牙。这些特征可被解释为对更偏向食草 - 食果饮食的适应。归属于阿拉帕霍猴的跗骨表明该属动物惯于跳跃。这种新的始镜猴科动物兼具“始镜猴亚科”和“近猴型亚科”的特征，可能源自更早的瓦萨奇期（始新世早期）的“近猴型亚科”动物，比如皮尔西泰托诺猴。阿拉帕霍猴似乎没有系统发育上的后继物种。
