อ้างอิง ของ ไทรโลไบต์

  1. 1 2 3
  2. ↑ Nedin, C. (1999), "Anomalocaris predation on nonmineralized and mineralized trilobites", Geology, 27 (11): 987–990
  3. 1 2 3
  4. ↑
  5. ↑
  6. 1 2 3 4
  7. ↑
  8. 1 2 3 4 5 6 7 8
  9. ↑
  10. ↑
  11. ↑
  12. ↑
  13. ↑
  14. 1 2 Fortey, Richard (2000), Trilobite!, London: HarperCollins, ISBN 0-00-257012-2
  15. ↑ Lambert, David (1985), The Field Guide to Prehistoric Life, Facts on File Publications, New York: the Diagram Group, ISBN 0-8160-1125-7