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Earliest record of marine life, Trilobites are dominant.
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Echinoderms come into existance, Invertebrates are dominant, mollusks become abundant, earliest jawless fish, and later jawed and armoured fish.
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Earliest terrestrial plants and animals, Tiktaaliks and Eurypterids develop.
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Armoured fish go extinct, abundance of several species of fish, Earliest amphibians and ammonites.
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Abundance of sharks and amphibians, large swamps and forrests. Earliest reptiles, scale trees, and seed ferns.
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Extinction of many types of marine animals, including Trilobites.
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Earliest dinosaurs, abundant cycads and conifers.
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Earliest birds and mammals, adundace of dinosaurs and ammonites.
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Earliest flowering plants, climax of dinosaurs followed by their extinction. Great decline of crachiopods. Abundance of bony fish.
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Earliest placental mammals, modern mammals, and large running mammals.
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Large carnivores, neanderthals, and humans.