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Earliest record of Marine Life- Trilobites are dominant
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Echinoderms (star fish, and sand dollar, sea urchin and sea cucumbers). Invertebrates, are dominant, mollusks become abundant. Earliest fish that are jawless and later, are jawed and armored.
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Earliest terrestrial plants and animals Eurypterids develop.
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Armored fish go extinct, but abundance of several species of fish earliest amphibians and ammonites.
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Abundant shark and amphibians, large swamps and coal , forming forest ( earliest reptiles).
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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.
