Across
- 2. a scientist that studies fossil remains found on earths surface in order to study primitive life forms
- 4. a scientist who studies Earth's crust as well at the processes and history that shaped it
- 5. history of life determined by all fossils
- 7. indicate the geological boundaries in geological time
- 8. the exact age of the fossil
- 9. an alive organism
Down
- 1. the remains of an organism
- 3. an organism who has entirely died
- 4. the geological history representing on the chronological time chart
- 6. the age in comparison to another fossil