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Trilobites were dominant, earliest record of marine life
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Echinoderms (starfish, sand dollars, sea urchins, and sea cucumbers). Invertebrates are dominant, mollusks become abundant. Earliest fish that are jawless and later, jawed and armored fish.
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Earliest terrestrial plants and animals. Tiktaalik Eurypterids develop.
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Armored fish go extinct, but there's an abundance of several species of fish. Earliest amphibians and ammonites.
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Many swamps on land and sponge reefs in the oceans. Reptiles appear. Early winged insects and cockroaches appear.
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Amphibians dominate the land. Early cone-bearing plants like pine trees appear. Period ends with the largest mass extinction known with 95% of all marine species and 50% of all animals going extinct.
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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. Extinction of 65% of species including the dinosaurs.
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Earliest placental mammals, modern mammals, large running mammals.
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Large carnivores, Neanderthals, humans, and mastodons.
