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GEOLOGIC TIME SCALE
DIVISIONS OF TIME
Eon: (years) longest period of time
Era: (months) second largest division of time made up of 2 or more periods.
Period: (weeks) third division of time.
Epoch: (days) smallest division of time.
EVENTS OF GEOLOGIC TIME
Precambrian- Boiling rock, 2 continents, single celled life
Cenozoic-Pangea forms, Explosion of Marine life, Life moves to land, Reptiles, Amphibians and Insects Appeared.
Mesozoic-Pangea breaks apart,Age of the dinosaurs, Pines Trees and Ferns
Paleozoic-Present day Earth, Age of Mammals