Did the first animal look like a sponge or a comb jelly? The debate continues. – Berkeley News

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  1. Did the first animal look like a sponge or a comb jelly? The debate continues.  Berkeley News
  2. Which animal really came first? The debate may finally be settled  Earth.com
  3. Fierce Debate About Earth’s First Animal Heats Up  Nautilus | Science…

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