Geologic Time Scale

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Across
  1. 1. this is the period we are currently in today
  2. 4. the first life on earth were these
  3. 7. this is the epoch we are currently a part of
  4. 8. at the end of this period, dinosaurs went extinct
  5. 10. at the end of this period 95%-96% of all life went extinct
  6. 12. this is what caused the mass extinction of dinosaurs
  7. 13. longest amount of time on the geologic time scale
  8. 15. this era is known as the age of the dinosaurs/reptiles
Down
  1. 2. this word means a whole species is dead and gone
  2. 3. this group of animals evolved right after birds
  3. 5. this word means before cambrian
  4. 6. these are what we look at to put together the geologic time scale
  5. 9. this is the eon we are currently a part of
  6. 11. this is the eon where earth was scary and mostly magma
  7. 14. shortest amount of time on the geologic time scale
  8. 16. this period is in between the devonian and ordovician