Geologic Time Scale
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Precambrian Era
Earth & oceans formed
Oldest rock/Prokaryotic cell
Eukaryotic cell/jellyfish-like animal
arthropods/first mass extinction
Paleozoic Era
Ancient Continents South Of Equator/Ice cap covers North America
Appalachian Mountains Form/Pagea forms
Vertebrates arise/Plants On Land
Lungfish/insects
Amphibians/Reptiles
Paleozoic Mass Extinction
Mesozoic Era
Pangea Breaks Apart/South America Breaks Away from Africa
The Age Of Reptiles/Flowering Plants
Dinosaurs/Mammals
Bird/Snakes
Mesozoic Mass Extinction
Cenozoic Era
Rocky Mountains Formed/Himalayas form
Continents Move To Current Positions/Ice Age
Grass/Modern Animal groups appear
Lucy The Australopithecus/Modern Humans
This is the Precambrian Era, in this Era you will learn about some cells, the first mass extinction, the earths formation, the oceans formation etc. It began 4.6 billion-544 MYA