-
Period: 541 BCE to 250 BCE
Paleozoic ERA
Age of invertebrates -
500 BCE
Cambriano
Many marine invertebrates with external skeleton -
460 BCE
Ordovician
widespread marine algae -
420 BCE
Silurian
first plants -
370 BCE
Devonian
fish diversity, first anphibians -
325 BCE
Carboniferous
first reptiles, forest of giants ferms -
270 BCE
Permian
reptiles diversity -
Period: 252 BCE to 66 BCE
Mezozoic ERA
Age of dinosaurs -
225 BCE
Triassic
first dinosaurs, first mammals, the Earth's greatest extinction occurs Pangea forms -
160 BCE
Jurassic
dinosaurs diversity, first flying and aquatic reptiles -
90 BCE
Cretaceous
first plants with flowers, extinction of dinosaurs and ammonites -
Period: 66 BCE to 2 BCE
Cenozoic Era
Massive extintion from metheorite -
25 BCE
Tertiary
development and diversitification of mamals -
15
Quaternary
first humans
