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