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This is a major time period, this is when major groups of animals begin to appear on the fossil record.
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A period that lasted 45 million years. This is best known for its diverse marine invertebrates, including graptolites, trilobites, brachiopods, and the conodonts.
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This when the growth of corals and other marine organisms was stoked by oceans teeming with tiny planktonic creatures.
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The Carboniferous Period is popular for its vast swamp forests. Swamps made the coal from which the term Carboniferous, or carbon--bearing, is derived.
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A period, which ended in the biggest mass extinction the Earth has ever known, began about 299 million years ago.
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The early Devonian consisted primarily of small plants, the tallest being only a meter tall. By the end of the Devonian ferns horsetails and seed plants had also appeared producing the first trees and the first forests..
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Earliest dinosours abaundant cycads, and conifers.
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Earliest birds and mammals abundant and dinosours and amonities.
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Earliest flowing plants, climax of dinosours followed by thier exctintion great decline of brachiopod, abundance of bony fish
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Earliest placement mammals modern mammals large running mammals.
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Large Carnivores, Neanderthals,Humans,and Mastodons were all present during this time period.
