Eon Era Period Epoch MYA Major Events
Phanerozoic Humans dominate the Earth
Holocene 0.01 Homo Habilis
Mammals
Quarternary
Origin of genus Homo
Pleiostocene 2.6 Ice ages begins
Wolly Mammoth
Homonids appear
Pilocene 5.3
Australopithecus
Cenozoic
Neogene
Ardipithecus ramidus
Miocene 2.3
Ape-like ancestors appear
Origin of primate groups,
Oligocene 33.9
including apes
Angiosperms dominance
Paleogene Eocene 55.8
increase
First large mammals appear
Paleocene 65.5
Insects are abundant
Mesozoic Flowering plants appear
Dinosaur extinction
Cretaceous 145.5
Tyrannosaurus Rex
Pretosaur
Jurassic 199.6 Dinosaurs are abundant
First Bird Appear