Earth long ago

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Across
  1. 2. A very fast dinosaure
  2. 5. One of the biggest dinosaure
  3. 7. Three horned face
  4. 8. tool used to cut out small pieces of a material
  5. 10. The king of the dinosaures
  6. 13. hard sap that grew a long time ago
  7. 14. To build again something that was destroyed
  8. 15. mark or what is left on the surface of a soft substance
  9. 17. A dinosaur that could fly
  10. 19. what is left of a plant or an animal that lived long ago
Down
  1. 1. A dinosaure with spikes on his tail
  2. 3. fearful lizards
  3. 4. it no longer exists
  4. 6. A scientist that studies fossils
  5. 9. tool used to push nails
  6. 10. A cruel ruler
  7. 11. A person that studies history through artifacts or remains
  8. 12. to decompose or become smaller because of bacteria, fungi, ...
  9. 16. A black, smelly and sticky liquid
  10. 18. To remove a small piece of something hard