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Half-billion-year-old fossils rewrite the origin story of starfish SECONDARY_TEXT

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Excerpt	Finding
The Yujingia fossils ... are thought to be close to the last common ancestor of ambulacrarians, the modern group that includes starfish, sea stars, sea urchi...	not found — this server looked at the page and did not find the passage
The fossilized animals ... preserve the body, gut and appendages, providing rare examples of ambulacrarians without a mineralized skeleton. The animals had t...	not found — this server looked at the page and did not find the passage