Across
- 5. process in which minerals replace an organism tissues
- 7. what do palaeontologist study a part from fossils
- 8. who thought that the earth was thousand years old
- 9. a principle that states that geologic processes that a occurred in past
- 12. he was a palaeontologist who made an important contributions of dinosaurs (spell name and surname together)
- 15. marine mollusk similar to a modern squid is called a
- 17. a remain that is left when an organism dies
- 18. best place to record layers is the (spell without spaces)
- 19. what was scientist surname that wrote the THEORY OF THE EARTH
- 21. a geological change that occurs suddenly
- 24. what era happened 542million years ago
- 25. a cavity in rock where a plant or animal was buried is called
- 26. When the sediment fills a mold and becomes rock this process is called
Down
- 1. is when the foot print of an organism is printed on the ground is called
- 2. what is an another word for tree sap
- 3. In 1999 what animal did Vladimir Eisner had found in the russian lands
- 4. where is dinosaur the is 150million years ago in the quart wall
- 5. Is someone who studies fossils is called an
- 6. the largest division of the geologic time
- 10. fossil that is found in the rock layers of only one geologic age and that is an
- 11. what era was the second
- 13. goes in the mass extinction is well know for their fossil also it starts with a D and ends with an r
- 14. a subdivision of a geologic period
- 16. An geological word for time has two or more periods
- 20. what era was the first
- 22. what happened 65 million years ago that make the dinosaurs extinct (scientists thought)
- 23. What period was the first