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HISTORY OF EARTH
CARMALT - 4 Eras of Earth's existance
Question | Answer |
---|---|
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) |