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HISTORY OF EARTH

CARMALT - 4 Eras of Earth's existance

QuestionAnswer
4.5 billion years agoliving things were one-celled organisms Precambrian Era
600 million years agofossile recrods of hard-shell animals Cambrian Period (Paleozoic Era)
510 million years agoanimal life in the oceans Ordovician Period (Paleozoic Era)
439 million years agofirst land plants evolve, reefs build up Silurian Period (Paleozoic Era)
408 million years agoland plants and amphibians evolve Devonian Period (Paleozoic Era)
360 million years agoamphibians and reptiles evolve Carboniferous Period (Paleozoic Era)
290 million years agocone-bearing plants and reptiles evolve Permian Period (Paleozoic Era)
245 million years agomammals present Triassic Period (Mesozoic Era)
208 million years agodinosaurs present Jurassic Period (Mesozoic Era)
144 million years agomore different dinosaurs appear than during Jurassic Period Cretaceous Period (Mesozoic Era)
65 million years agoapes and humanoids Tertiary Period (Cenozoic Era)
1.6 million years ago to TODAY!humans Quaternary Period (Cenozoic Era)
Created by: EM4CARMALT