This document is a student's class paper on the topic of human evolution. It summarizes 10 key stages in human evolution:
1) Parapithecus spp, basal anthropoids from 40-33 million years ago with unusual dentition.
2) Propliopithecus spp, an ape-like primate from 30 million years ago thought to be ancestral to apes and humans.
3) Dryopithecus spp, an ape from 20-25 million years ago exhibiting similarities to chimpanzees with semi-erect posture.
4) Ramapithecus spp, an ape-man from 14-12 million years ago