Across
- 2. A major division of geological time
- 3. dating The science of determining the relative order of past
- 7. dating A method used to determine the age of an object
- 9. The remains of a prehistoric organism
- 10. A division of time that is a subdivision of a period
Down
- 1. dating A method of dating geological specimens
- 4. A subdivision of an eon and itself
- 5. time scale A system of chronological dating
- 6. A span of time
- 8. fossil A fossil used for dating