Fossil Record

Eras (oldest to most recent)

Hadean, Archaen, Proterozoic, Paleozoic, Mesozoic, Cenozoic (Hey Andy, please pay my children!)

all periods (oldest to most recent)

Cambrian, Ordovician, Silurian, Devonian, Carboniferous, Permian, Triassic, Jurassic, Cretaceous, Tertiary, Quaternary (could only shivani do (the) circus performance through january cause tina quit)

Epoch (oldest to most recent)

paleocene, eocene, oligocene, miocene, pleistocene, holocene, anthropocene (people eat other men preparing protein. hungry assholes!)

Hadean

Earth and moon formed (4 BYA)

Archaen

end of heavy bombardment— origin of life (2.5 BYA)

Proterozoic

earliest eukaryotes (542 MYA)

Paleozoic- cambrain

marine diversity — animal phyla (488 MYA)

Paleozoic - Ordovician

echinoderms (444 MYA)

Paleozoic- Silurian

agnathans (416 MYA)

Paleozoic- Devonian

bony fishes (359 MYA)

Paleozoic - Carboniferous

small northern continents form (299 MYA)

Paleozoic - Permian

continents aggregated into pangea (251 MYA)

Mesozoic - Triassic

reptiles - first dinosaurs (200 MYA)

Mesozoic - Jurassic

continents separating - dinosaurs + birds (145 MYA)

Mesozoic - Cretaceous

mass extinction end of the period (65-5.3 MYA)

Cenozoic- Tertiary

continents modern position, cooler, dry climate

Cenozoic - Quaternary

all of human history