uhm gts

Precambrian eon

88% of earths history falls under this supereon

Hadeon eon

Formation of earth

Archeon eon

First life

Proterozoic eon

Great oxygenation

Phanerozoic eon

Eon of visible life

Paleozoic era (ancient life

Cambrian explosion

Cambrian period

Most major animal groups evolved duirng this

Ordovician period

First land plants

Silurian period

First vascularplants

Devonian period

Fish dominant grouo

Cretaceous period

k-pg event, flowering plants dominated,

Cenozoic era

Age of mammals

Paleogene period

Mammals diversity

Eocene epoch

Early hoofed mammals

Neogene period

Evolution of mammals and birds continue

Miocene epoch

Grasslands expanded

Pliocene epoch

First early human species

Quaternary period

Age of humans

Carboniferous period

Warm swampy environment

Permian period

Domination of reptiles

Mesozoic era

Age of reptiles/dinos

Triassic period

Pangea intact, first true mammals

Jurassic period

Age of giants