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Earliest record of marine life, like the Trilobites are most dominant. During this time the Cambrian Explosion occured killing all marine animals in 550 MYA also Rodinia was fully broken apart and now had an ozone layer.
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Echinoderms(starfish,sand dollars, sea urchins, sea cucumbers) existed. Invertebrates are the most dominant, mollusks became abundant. Earliest fish are jawless, but later on become jawed, armored fish. Due to the ozone layer life was able to live.
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The earliest terrestrial plants and animals came to life. Tiktaalik Eurypterids develop.
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Armored fish go extinct but, there is an abundance of several other species of fish. The earliest amphibians and ammonites come to life.
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Abundance in sharks and amphibians. Swamplands and coal forming forest. Earliest reptiles, scale trees, and seed farms are very common. After most of the plants died they would become coal like.
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Extinction of many types of marine animals including trilobites due to the large volcanic eruptions. 95% of all marine species and 50% of all animals went extinct.
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Earliest dinosaurs,abundant cycods and conifers.
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Earliest feathered birds and mammals, abundant dinosaurs and ammonites. Ferns, cycads and grasses are the most common land plants in this period.
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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 dinosaurs.
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Earliest placental mammals,modern mammals, large running animals.
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Large carnivores,neanderthals,humans and mastodons.
