-
cambrian 570 - 500 MYA
No life on land. All oceans. Alge was discovered of different types. Jawless vertebrates. Marine life, and Trilobites. -
Ordovician 488.3- 443.7 MYA
Lasted 45 million years
Early vertebrates, early land plants, colonization of land.
End of this period 60% went extint. -
Silurian 443.7 - 416 MYA
Life on land, melting of glacers -rise in major seas
Jawless fish & fish with jaws Earlist fossils of vascular plants,
trilobites, graptolites, conodonts, corals, stromatoporoids, and mollusks -
Devonian 416-358 MYA
Earliest amphibians, and ammonites.
Armored fish, abundant fish extinction
vascular plants -
Carboniferous 359.2-299 MYA
Earliest reptiles, sharks, amphibians
scale trees, and seed ferns
coal forming forests. -
Permian 299-251 MYA
Extintion of many marine animals; Trilobites
little changein terrestrial animals.
Largest mass extintion. -
Triassic 248-206 MYA
Earliest dinosaurs
abundunt cycades and conifers
continent pangea existed. -
Jurassic 199.6-145.5 MYA
Birds, mammals, dinosaurs, and ammonites
Oceans full of fish
dinosaurs dominated land. -
Cretacous 136-65 MYA
Flowering plants
climax of dinosaurs, ammonites followed by extintion.
Devolopment of bony fish -
Tertiary 66-2.58 MYA
age of mammals
grazing animals
humans
Ends with an ice age -
Quatnary 2.6- present
Dramatic climate changes
extinction of many species
This period reffered to as an ice age
Humans
