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Trilobites are dominant in the earliest record of marine life
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Invertebrates are dominant in marine life (starfish, sand dollar, sea urchin, and sea cucumbers). The earliest fish appear and are jawless.
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Earliest terrestrial plants and animals
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Armored fish go extinct. Earliest amphibians and ammonites appear
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Abundant sharks and amphibians
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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 abundant dinosaurs and ammonites
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Earliest flowering plants, climax of dinosaurs followed by their extinction. Great decline of brachiopods, abundance of bony fish.
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Earliest placental mammals, modern mammals, large running mammals
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Large carnivores, neanderthals, humans, mastadons
