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  "publishedAt": "2026-04-01T23:33:47.000Z",
  "site": "https://upstract.com",
  "textContent": "A 500-million-year-old clawed predator rewrites the origin of spiders and horseshoe crabs It had been a long day of teaching for Rudy Lerosey-Aubril. As a reward, he returned to cleaning an intriguing Cambrian arthropod fossil he had recently received for review. At first, the specimen showed all…",
  "title": "A 500-million-year-old clawed predator rewrites the origin of spiders and horseshoe crabs"
}