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Ancient Arthropod Was Shaped Like a Taco and Swam Upside-Down

An illustration of Odaraia.

Discovered over a century ago, paleontologists think they've finally cracked the code of the wacky creature's morphology.

source https://gizmodo.com/ancient-arthropod-was-shaped-like-a-taco-and-swam-upside-down-2000477904

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