-
251,000 BCE
Triassic
first dinosaurs; rise of mammal-like reptiles -
199,600 BCE
Jurassic
giant dinosaurs; early birds;first mammals -
145,500 BCE
Creataceous
mass extinctions(including dinosaurs); flowering plants appear -
35,920 BCE
Mississippian
amphibians spread;sharks and bony fish;winged insects -
31,810 BCE
Pennsylvanian
giant insects;first reptiles -
29,900 BCE
Permian
moder insects;reptiles spread;evergreens;extinction of trilobites -
11,477 BCE
Recent (Holocene)
end of last Ice Age, rise of human civilization -
1800 BCE
Tertiary
Pliocene, peak of mammals; modern invertebrates, rize of grazing mammals,primitive apes;whales;first modern mammals
