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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) |
Created by:
EM4CARMALT
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