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Earliest record of marine life-tribolites are dominant. The end of the period was eventually set at a fairly definite faunal change now identified as an extinction event.
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echinoderms (starfish, sand dollars, sea urchin, 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 eurypterial develops.
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Extinction of many types of marine animals including trilobites.
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Earliest dinosaurs, abundant cycods 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
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Earliest placental mammals, modern mammals, large mammals. Antartica drifted to its current position over the South Pole during this era. Widespread volcanic activity was prevalent.
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Large Canivore, neaderthals, humas, mastadons. Climate change and the developments it spurs carry the narrative of the Quaternary.
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Armored fish go extinct, but abudance of several species of fish. Earliest amphibians and ammonites.
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(Mississippian,Pennsylvanian) Abundant sharks and amphibians large swamps and coal forming forests. Earliest reptiles, scale trees and seed ferns.
