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The era was Mesozoic and the period was Triassic in that time was the first dinosaurs
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simple multicellular sea creatures develop , algae and plankton develop, eukaryotic cells develop
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The era was Mesozoic and the period was Jurassic in that epoch had giant dinosours
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The era was Mesozoic and the period was Cretaceous in that epoch it was the mass extinctions
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The era was Paleozoic and the period was Ordovician and Cambrian it has trilobites abundant and suddent explosion of live
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The era was Cenozoic and the period was Tertiary and had Pliocene epoch, Miocene epoch,Opligocene epoch,Eocene epoch and Paleocene epoch
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The era was Paleozoic and the period was Mississippian, Devonian and Silurian and has amphibians spread ,fresh water fish and land colonized by arthropods and plants
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Earth becomes habitable ; spontaneous generation of first cells; rise of bacteria and cyanobacteria
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Formation of earth
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The era was Paleozoic and the period was Permian and Pennsylvanian and had modern insect and giant insects
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The era was Cenozoic and the period was Quaternary that was recent epoch and pleistone epoch
