GEOLOGIC TIME WORD PUZ

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Across
  1. 3. The earliest iteration of the Earth
  2. 5. An era also known as the Age of Invertebrates
  3. 7. Also called a system in stratigraphy
  4. 8. An era also known as the Age of Reptiles or Age of the Dinosaurs
  5. 10. The Greek word for Epoch
  6. 11. Other term for Proterozoic Eon
Down
  1. 1. The stratigraphic history of the Earth
  2. 2. Era is also known as ___ in stratigraphy
  3. 4. Ordering of and analysis of the Earth's layer
  4. 6. Eon is also known as ___ in stratigraphy
  5. 9. An era also known as the Age of Mammals