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Global Time Scale
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Juliet Pridgen
⟶ Atualizado 19 jan 2018 ⟶
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Eventos
Formation of the Earth ( Beginning of Precambrian Era) : 4.57 bya
1st Life forms evolve: 4.00 bya
oxygen Catastrophe
Atmosphere becomes oxygenated: 2.50 bya
Earliest fossils of multicellular life: 635 mya
Cambrian Explosion, 1st chordate fossils: 543 mya
1st land plants: 470 mya
Trilobites are common and diverse: 430 mya
1st land vertebrates: 331 mya
Formation of Pangea, Appalachian Mnts: 254 mya
Beginning of Mesozoic Era: 251 mys
Dissolution of Pangea: 174 mya
Dinosaurs rules the land, mammals are common but small: 152 mya
Beginning of Cenozoic Era: 66 mya
Mammals are diverse and common: 59 mya
Evolution of modern humans: 2.4 mya
Períodos
Precambrian Era
Paleozoic Era
Mesozoic Era
Cenozoic Era