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Phanerozoic diversity

Phanerzoic fauna

The Phanerozoic Eon is the current eon in the geologic time scale. It is split into three geologic eras: The Paleozoic, the Mesozoic, and the Cenozoic. Overall, it contains twelve periods (The Cambrian, the Ordovician, the Silurian, the Devonian, the Carboniferous, the Permian, the Triassic, the Jurassic, the Cretaceous, the Paleogene, the Neogene, and the Quaternary. It is the current geological eon in the geologic time scale when complex animal life evolved, such as fishes and arthropods, land plant and animal life evolved, including amphibians, reptiles, birds, and mammals, the Great Dying occurred, the dinosaurs evolved, the mammals took over from then, humans later evovled and and began populating Earth.

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