Cenozoic Era Major Events
During the Paleogene Period, some major events were that mammals started to appear after the dinosaurs went extinct. Then after that, primates appear and start to live in the trees. During the Neogene Period, hominins move and start to live on the ground and not in the trees anymore. During the Quaternary Period, ice ages begin. Also, humans were born in eastern Africa around 190,000 years ago.