10-11-2023, 06:01 AM
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Senior Member
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Join Date: Mar 2017
Location: ABQ, New Mexico
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The oldest multi-organ creatures to exist are still thriving in the depths of the ocean today. As of 2007, the oldest jellyfish fossils discovered date to over 505 million years ago. Some scientists speculate that they may have existed as early as 700 million years ago.
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