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Time Scale (MYA) (12hr) Major Event Earth Era Homo Sapiens (Modern Form of Human Species First Apes/Hominid Line – Grasses Appear Whales CENOZOIC ERA Primates Appear (opposable thumb) BLUE CENOZOIC ERA Dinosaurs Extinction First Flowering Plants First Birds Flying Reptiles Appear Rise of the Dinosaurs MESOZOIC ERA Red MESOZOIC ERA Cone Bearing Trees (Dawn of the Redwoods) First Land Vertebrates Land Dwelling Arthropods – Rise of the Insects First Sharks PALEOZOIC ERA Ferns & Other Primitive Vascular Plants Green First Land Plants – First Jawed Fish PALEOZOIC ERA Multi cellular Soft Bodied Animals First Eukaryotes Photosynthetic Bacteria – Atmospheric O2 Prokaryotes Formation of Earth & Moon PRECAMBRIAN TIME PRECAMBRIAN Time ORANGE
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