Geologic Time Crosswords Puzzle

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Across
  1. 3. The Mesozoic era is when these animals dominated the Earth.
  2. 4. This eon has most of the fossils and life on Earth.
  3. 7. This time period happened from 444mya-419mya.
  4. 10. This era is when Humans first arrived on Earth.
  5. 12. This giant animal is part of the vertebrates group, and lived during the late Cenozoic era.
  6. 13. This time period is older than the Ordovician period.
  7. 14. This is the largest grouping of time in the geologic time scale.
Down
  1. 1. This is one of the Earth's first land plants.
  2. 2. These life forms dominated the Paleozoic era from the Cambrian period through the Permian period.
  3. 5. These first arrived in the Permian period.
  4. 6. This is the first epoch of the Cenozoic era.
  5. 8. When an entire group of life dies and never comes back (none are born in the future).
  6. 9. This eon is when the Earth, Moon, and Solar System first formed about 4.5 bya!
  7. 11. This is the name of the blue soft toy in Mr. Len's class.