Why are plesiadapiforms not considered true primates?
A) They lacked stereoscopic vision and grasping hands.
B) They were not mammals.
C) They had highly mobile elbow joints.
D) They appear too early in the fossil record to be related to primates.

Question

Quizplus · Accepted Answer

Plesiadapiforms lacked two key traits that define primates: stereoscopic vision and grasping hands. These traits are essential for arboreal living, which is a defining feature of primates. While plesiadapiforms had some traits in common with primates, they lack these two key features.

Why Are Plesiadapiforms Not Considered True Primates