Megaladapis

Megaladapis, informally known as the koala lemur, is an extinct genus of lemurs belonging to the family Megaladapidae, consisting of three species that once inhabited the island of Madagascar. The largest measured between in length.

== Description == Megaladapis was quite different from any living lemur. Its body was squat and built like that of the modern koala. Its long arms, fingers, feet, and toes were specialized for grasping trees, and its legs were splayed for vertical climbing. The morphology of its foot suggests Megaladapis evolved to live in an arboreal environment, having a large hallux and lateral abductor musculature that helped it to grasp vertically on trees. These features are shared by other arboreal species. The hands and feet were curved and the ankles and wrists did not have the usual stability needed to travel on the ground that most other lemurids have.