When Were primates present during primeval times?

Primates first appeared during the late Cretaceous period, around 65 million years ago, but they became more diverse and prominent during the Paleocene epoch, approximately 66 to 56 million years ago. The earliest primates were small, tree-dwelling mammals. By the Eocene epoch, around 56 to 34 million years ago, primates had evolved into more recognizable forms, including early prosimians and anthropoids, setting the stage for the later evolution of modern primates.