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Earliest period of marine life.
Trilobites are dominant. -
Echinoderms, starfish, sand dollar, sea urchin, and sea cucumbers.
Invertabres are dominant, mollusks become abundant, earliest fish are jawless and later, jawed armored fish come around. -
Earliest terrestrial plants and animals. Tikaalik and 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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An abunbundance of sharks and amphibians. Large swamps, and coal foarming forests. Earliest reptiles, scale trees, and seed ferns.
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Many marine animals went extinc including Trilobites.
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Earliest dinosaurs, abundant cycads and conifers.
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Earliest birds and mamals emerge. 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, and large running mammals.
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Abundance of large carnavors.
