Across
- 4. a time period
- 5. the era of the dinosaurs
- 7. chirping away at something
- 10. a rock from a long time ago
- 11. the proses a bone undertakes before
- 13. a type of animal from the same family
- 15. an animal evolves to _______ to its environment
- 16. rock building on top of a bone creates a lot of _______
Down
- 1. disappearance of about 50% of anime species
- 2. an extinction of all of one species
- 3. people that work with fossils
- 6. rock in a layered form
- 8. doges love _____
- 9. things in rock that go into bones to fossilize them
- 12. bones from a long time ago
- 14. the star we see in the day