When and in what habitat did animals likely originate, and when did today's major groups of animals arise?

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asked Mar 14, 2021 196k views

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Novie · Answer 1 · 2021-03-21T10:19:26+0000

Answer: To our current understanding, animals first appeared in the Precambrian Era, during what is called the Cambrian Explosion, and they are believed to have arisen in shallow water environments, today's major groups of animals originated about 542 million years ago

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When and in what habitat did animals likely originate, and when did today's major groups of animals arise?

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When and in what habitat did animals likely originate, and when did today's major groups of animals arise?