Topic summary
Adapid
Extracted from the Wikipedia article Adapidae.
Adapid systematics and evolutionary relationships are controversial, but there is fairly good evidence from the postcranial skeleton (everything but the skull, or cranium) that adapids were stem strepsirrhines, members of the group including the living lemurs, lorises, and bushbabies. In particular, the anatomy of the adapid wrist and ankle, such as the position of the groove for the flexor fibularis tendon on the talus bone and the presence of a sloping talo-fibular facet, show derived similarities with those of living strepsirrhines.