The premolars were absent in all species other than A. kenyensis. On the upper molars, the posterior pretrite central conules were reduced, as were the anterior pretrite central conules on the lower molars. The pretrite and posttrite half-loph(id)s were dislocated from each other, resulting in the successive loph(id)s exhibiting an alternating pattern.
The premolars were absent in all species except A. kenyensis. The upper molars had reduced posterior pretrite central conules, and the anterior pretrite central conules on the lower molars were also reduced. The pretrite and posttrite half-loph(id)s were dislocated from each other, resulting in a pattern of alternating loph(id)s.