Paleozoic Life
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Science
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11th - 12th Grade
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Hard
Ophyla Lopez
Used 71+ times
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8 Slides • 0 Questions
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Paleozoic Life
ESS.8 Students know that fossils provide evidence for geological and biological evolution.
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The Paleozoic Era follows the Precambrian and is the first era of the Phanerozoic Eon. The Paleozoic lasted from about 540 to 240 million years ago. It is divided into several periods, beginning with the Cambrian and ending with the Permian. Large extinction events separate the periods. After each extinction event, many new life forms evolved.
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During the Cambrian Period, there was a tremendous diversification of marine life forms, commonly called the “Cambrian Explosion.” At the start of the period, shallow seas covered most of the land, and every major type of marine organism evolved during this time.
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During the remainder of the Paleozoic Era, several major evolutionary events occurred, beginning with the first fish about 500 million years ago. By about 425 million years ago, the first land plants and fungi had evolved. This was followed by the first insects (400 million years ago), first amphibians (360 million years ago), and first reptiles (300 million
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Paleozoic Life
ESS.8 Students know that fossils provide evidence for geological and biological evolution.
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