Across
- 3. accordion
- 6. theory
- 7. excavation
- 10. erosion
- 12. paleontologist
- 14. extinct
- 16. chancellor
- 17. fossils
- 20. administer
- 22. struggle
- 26. peculiar
- 27. passenger
- 28. evidence
Down
- 1. councilor
- 2. youngster
- 3. artificial
- 4. acre
- 5. specimens
- 8. ambassador
- 9. hypotheses
- 10. extracurricular
- 11. punctual
- 13. geologists
- 15. weapon
- 18. stumble
- 19. calender
- 21. messenger
- 23. gallon
- 24. quarrel
- 25. familiar