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The Paleozoic era was from 540 million years ago to about 245 million years ago. After that came the Mesozoic era, and that lasted from the end of the Paleozoic to 65 million years ago, when the earth entered the Cenozoic era.

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16y ago
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13y ago

The Paleozoic Era took place for 322 million years and in this era many life forms began to flourish. Mostly fish and aquatic animals and shell fish.

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12y ago

The Mesozoic era was before the Cenozoic era.

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6y ago

The Mesozoic Era is the second era in the Phanerozoic Eon, and is one of three, the two other eras being the Paleozoic (which came before) and the Cenozoic (which came after).

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13y ago

The Paleozoic came before the Mesozoic.

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15y ago

Neoproterozoic

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Q: What is the era before the Mesozoic Era?
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