{
  "id": 130901,
  "title": "518-million-year-old creature reveals the origins of spider fangs",
  "url": "https://urgent.news/2026/08/04/518-million-year-old-creature-reveals-the-origins-of-spider-fangs",
  "topic": "science",
  "section": "Science",
  "published": "2026-08-04T13:18:10.000Z",
  "source": {
    "name": "ScienceDaily",
    "slug": "sciencedaily",
    "url": "https://www.sciencedaily.com/releases/2026/08/260803080906.htm"
  },
  "original_language": "en",
  "account": "A 518 million-year-old fossil has unveiled the origins of spider fangs, according to a study published in Nature. Researchers from Yunnan University and the University of Leicester discovered the fossil during an investigation of the Chengjiang fossil site in southern China. The creature, known as Urokodia, measured between 2-3 cm in length and possessed large eyes, jointed limbs, and a segmented skeleton. Notably, the fossil exposes two pincer-like appendages near the creature's eyes, which represent an early form of chelicerae, the structures that eventually evolved into spiders' and scorpions' fangs. By employing X-ray technology, scientists were able to examine the soft anatomy of the fossil, which remained preserved for hundreds of millions of years. Urokodia belonged to the chelicerate group, a diverse collection of invertebrates that includes scorpions and ticks. The fossil provides vital insights into the evolutionary history of these arachnids, highlighting their role as ancient predators. Despite their fearsome appearance in movies, most spider species do not pose a threat to humans. The research was led by Professor Yu Liu of Yunnan University, who observed the pincer-like appendages during the analysis of the fossil.",
  "summary": "A tiny 518-million-year-old sea creature has revealed the earliest known evidence of the structures that eventually became spiders’ fangs. Hidden inside the fossil were pincerlike limbs and preserved soft tissues that help explain how the ancestors of spiders and scorpions evolved into formidable hunters.",
  "key_points": [
    "518 million-year-old fossil reveals origins of spider fangs",
    "Urokodia, a 2-3 cm creature, discovered in China",
    "X-ray analysis uncovers soft anatomy of ancient arachnid"
  ],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}