-
500 BCE
cambrian
most life was marine life -
419 BCE
devonian
the first seed bearing plants start showing up all over the earth. -
359 BCE
carboniferous
consisted of vast swamp forests -
298 BCE
permian
The Permian witnessed the diversification of the early amniotes into the ancestral groups of the mammals, turtles, lepidosaurs and archosaurs. -
252 BCE
triassic
Therapsids and archosaurs were the chief terrestrial vertebrates during this time. -
201 BCE
jurassic
On land, the fauna transitioned from the Triassic fauna, dominated by both dinosauromorph and crocodylomorph archosaurs, to one dominated by dinosaurs alone -
145 BCE
cretaceous
The Cretaceous was a period with a relatively warm climate, resulting in high eustatic sea levels that created numerous shallow inland seas. -
66 BCE
tertiary
In the early development of the study of geology, the periods were thought by scriptural geologists to correspond to the Biblical narrative, the rocks of the Tertiary being thought to be associated with the Great Flood.
