Across
- 6. from 230 million to 63 million years ago
- 7. extinct east african homnid
- 8. extinct reptile
- 9. very old
- 10. an antiquity that has survived from the distant past
- 11. maintain something in its original or existing state
- 13. a kind of stone a form of silica
Down
- 1. The practice of farming
- 2. the Ice Age
- 3. another word for Middle stone age
- 4. The land mass formed by Europe and asia
- 5. a historical tool that divides the past into compartments
- 12. the remains of a civilization's architecture