Age of Mammals

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Across
  1. 2. close to our time
  2. 4. what happened to the animals
  3. 5. resembled carnivores
  4. 8. one of the first horse-like animals during this time
  5. 11. this was the age of the
  6. 12. birds during this time had this size of wings
  7. 13. contributed to extinction
  8. 14. meat eaters
  9. 16. when the Alps were formed
  10. 17. this age was during this era
  11. 18. are 4 billion years old
  12. 19. mammoth the biggest mammal during this time
Down
  1. 1. 65 million years ago to this
  2. 3. opened in 65 million years ago
  3. 6. survived the meteor shower
  4. 7. had a 7 foot wing span
  5. 9. plant eaters
  6. 10. when the era began
  7. 14. what you're doing
  8. 15. what the mammals did over time