Across
- 5. Earliest Grasses
- 6. Abundant fish
- 7. Continents together
- 8. Earth's First Coral Reefs
- 9. Abundant Dinosaurs and ammonoids
- 11. Homosapiens
Down
- 1. Extinction by Meteor
- 2. Era with Cretaceous, Jurassic, and Triassic periods
- 3. Abundant Reptiles
- 4. Era with Quarternary, Neogene, and Paleogene periods
- 5. First Eon
- 10. Earliest insects