Oops, this 300 million-year-old 'blob' fossil was upside down. It's not a jellyfish after all.

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Famous 'jellyfish' fossil from 300 million years ago was upside-down the whole time. It's actually another animal entirely.

Oops, this 300 million-year-old 'blob' fossil was upside down. It's not a jellyfish after all. : Read more