*Yorkicystis*, the 500 million-year-old relative of starfish that lost its skeleton - The Conversation

The discovery of a unique 510 million-year-old fossil in a Pennsylvania churchyard offers new clues into how early life evolved on Earth.

After four years of digging for fossils in a churchyard in York, Pennsylvania, amateur paleontologist Chris Haefner made an intriguing find. I knew it was worth keeping, he said. He posted his discov… [+5967 chars]

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