Geologic Time Scale Crossword Puzzle

12345678910111213141516171819
Across
  1. 2. The Jurassic Period was known as the age of the _________
  2. 5. The Quaternary Period introduced ______ (Me and You)
  3. 8. 2nd most common fossil in the Cambrian Period
  4. 11. The Tertiary Period was known as the age of the _______
  5. 14. Sedimentary rock with lots of preserved fossils
  6. 16. Mountains that formed during the Cretaceous Period
  7. 18. The Carboniferous Period introduced the 1st ________
  8. 19. Most common fossil in the Precambrian Period
Down
  1. 1. Very common in the Carboniferous Period
  2. 3. Beginning of geologic time
  3. 4. Exposed layers of Craton
  4. 6. Index fossil of the Cambrian Period
  5. 7. The first vertebrate was a ____
  6. 9. Animals without a water-proof covering
  7. 10. The ___________ Mountains began to form during the Devonian Period
  8. 11. Wiped out 50% of all plants and land animals, as well as all dinosaurs
  9. 12. Supercontinent that began to form in the Permian Period
  10. 13. The Cambrian Period was the beginning of the ______ record
  11. 15. The Quaternary Period began the ___ ___ (Temperatures dropped)
  12. 17. Oldest rocks in the Precambrian Period