-
Precambrian
There is very little plant life during this period. -
Precambrian
Huge plants begin to develop, early amphibians form. -
Precambrian
Swamps and forests cover the land. -
Precambrian
Coal deposits form -
Cambrian
Colonies of tiny Invertebrates call graptolites florished and vertibrates appear, Fish did not have jaws or teeth and their bodies were covered with bony plates. -
Ordovician
Vascular land plants and animals, such as scorpions begin to evolve on land. -
Devonian
Ages of fishes, fish that can breath out of the water and spend time on land form. -
Silurian
Euryptids, sea stars and coral become more common. -
Carboniferous Mississippian Period
Huge plants begin to develop, early amphibians form. -
Carboniferous Pennsylvanian Period
Giant cockroaches apper -
Permian
Environmental change causes mass extinction of sea invertibrates
as the seas retreat -
Triassic
Welcome to the world of Dinosaur! Enter the squirrel sized dinosaur and the first forest dwelling mammals appear. -
Triassic
Whoa those dinos are getting big and dominate the land
Carnivores and herbivores have arrived -
Jurassic
Flying reptiles called pterosaurs are in the air now -
Cretaceous
First flowering plants appear -
Cretaceous
Impact hypothesis
Dinosaur mass extinction -
Paleocene
First primates evolve -
Eocene
Flying squirrels, whales, and bats appear -
Eocene
First modern horses appear -
Oliogocene
Small rodents evolve -
Miocene
Early reptiles resembling large lizards appear -
Pliocene
Many early mammal become extinct,clams and snails flourish -
Pleistocene
Homosapien appeared and are hunters -
Holocene
Modern human developed agriculture and used tools made of bronze and iron.
