Across
- 3. ancient tools
- 6. bipedal primates
- 8. rock moved by a glacier
- 11. large flightless bird
- 14. time between ice ages
- 16. humans
- 17. ancestor
- 19. process of becoming extinct
Down
- 1. walks on two feet
- 2. supporters of the multiregionalist theory
- 4. subspecies of humans
- 5. fossil sight
- 7. ancient fossils
- 9. Book written by Tim Flannery
- 10. handy man
- 12. ice age
- 13. artic plant
- 15. could walk upright
- 16. Primate family that includes humans
- 18. time when earth was frozen