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Oceans covered the Earth's surface. All life was marine and mostly consisted of trilobites.
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Echinoderms, invertebrates, mollusks, fish, jawed and armored fish.
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Animals were starting to go on land. Plants and animals, Tiktaalik, eurypterids existed.
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Fish (armored extinct), amphibians and ammonites.
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The Earth's surface was tropical swamplands. Reptiles, scale trees, seed farms, sharks and amphibians.
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Extinction of many marine animals including trilobites due to a mantle plume.
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Earliest dinosaurs, cycads, conifers.
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Earliest birds, mammals, dinosaurs, ammonites.
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Earliest flowering plants, climax of dinosaurs followed by extinction, decline in brachiopods, bony fish.
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Earliest placental mammals, modern mammals, large running mammals.
