Evidence from ancient skeletons suggests that the first mammals appeared over _______________ million years ago, whereas the earliest primates first evolved approximately _______________million years ago.

Question

Evidence from ancient skeletons suggests that the first mammals appeared over _______________ million years ago, whereas the earliest primates first evolved approximately _______________million years ago.​

Quizplus · Accepted Answer

The first mammals appeared over 200 million years ago, and the earliest primates evolved approximately 65 million years ago.

Evidence from Ancient Skeletons Suggests That the First Mammals Appeared