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Q&A Can Pinnipeds Fit in a Worm Forest?

In an alternate Earth, coral has been extinct for over 400 million years. In their place were the following: Bivalvia (clams, oysters, mussels) Cirripedia (barnacles) Canalipalpata (bristle-foot...

5 answers  ·  posted 6y ago by JohnWDailey‭  ·  last activity 6y ago by JohnWDailey‭

Question environment evolution earth mammals ecology alternate-earth