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Trilobites dominant, oceans dominated Earth, All life was marine
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Invertebrates were dominant, gondwana was the supercontinent, earliest fish evolved
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earliest terrestrial plants and animals , underwater life thrived
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armored fish go extinct but there's an abundance of several species of fish amphibians and ammonites
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abundant sharks and amphibians large swamps and coal forming forest earliest reptiles scale tress and seed ferns
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extinction of many types of marine animals including trilobites due to larger volcanic eruptions 95% of species went extinct
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earliest dinosaurs abundant cycads and conifers life outside of ocean began to diversify
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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, mastodons
