Across
- 2. The first epoch of the Cenozoic Era, following the mass extinction of the dinosaurs.
- 5. Period characterized by diverse marine life and coral reefs.
- 12. A period known for reef-building and the diversification of therapsids.
- 13. Period characterized by high sea levels and the first coral reefs.
- 14. The last stage of the Late Jurassic, known for its marine and terrestrial diversity.
- 16. Early stage of the Middle Jurassic, known for its marine fossils.
- 17. Stage known for the rise of some of the largest dinosaur species.
- 19. Marked by the dominance of marine reptiles and ammonites.
- 22. A stage within the Triassic, known for marine limestones and dolomites.
- 25. Epoch marked by the emergence of many early archosaurs.
- 29. Ended with a mass extinction event, including the demise of the dinosaurs.
- 33. Named after an English town, known for its rich marine deposits.
- 34. Stage when early angiosperms (flowering plants) began to diversify.
- 37. A stage during which major chalk deposits were formed.
- 39. Time known for significant volcanic activity and marine transgressions.
- 40. The last stage of the Permian, ending with the greatest extinction event in Earth's history.
- 42. Known for its very warm climate and marine transgressions.
- 43. Time marked by relatively high sea levels and diverse marine life.
- 44. Period marked by extensive forests and formation of vast coal deposits.
- 45. The earliest stage of the Jurassic period, following the Triassic extinction.
- 46. Ended with the largest mass extinction in Earth's history.
- 47. Time when grasslands began expanding, and first elephants appeared.
- 48. Time characterized by warm shallow seas and abundant marine life.
- 50. Epoch marked by climate cooling and the spread of grasslands.
Down
- 1. Stage when the first true dinosaurs appeared.
- 3. Period that saw a high diversity of dinosaur species.
- 4. Time noted for the development of many new species of ammonites.
- 6. Includes the current geological epoch and Ice Ages.
- 7. Time when dinosaurs dominated and the first birds appeared.
- 8. Epoch known for warm climates and the diversification of mammals.
- 9. A stage of the Late Permian, preceding the massive end-Permian extinction.
- 10. The first stage of the Late Cretaceous, marked by abundant marine life.
- 11. Epoch marked by the widespread deposition of limestone.
- 14. Period that marks the beginning of the Mesozoic Era and rise of dinosaurs.
- 15. Period following the extinction of the dinosaurs, marked by the rise of mammals.
- 18. The earliest age of the Cretaceous period.
- 20. Time marked by the diversification of early dinosaurs and marine reptiles.
- 21. The current geological epoch, beginning around 11,700 years ago.
- 23. The final stage of the Cretaceous, marked by the famous mass extinction event.
- 24. Time of the first vascular plants and jawed fish emergence.
- 26. The last stage of the Triassic, preceding the rise of the Jurassic period.
- 27. The period known for the "explosion" of diverse life forms.
- 28. Time characterized by recovery from the end-Permian extinction and rise of reptiles.
- 30. Period of significant mountain building and cooling climate.
- 31. Stage known for the development of many reef-building organisms.
- 32. Known as the "Age of Fishes," saw the rise of amphibians.
- 35. Period marked by the dominance of flowering plants and early birds.
- 36. The earliest stage of the Triassic, known for its recovery phase following a mass extinction.
- 38. Time of repeated glaciations and emergence of Homo sapiens.
- 41. Known for its extensive black shale deposits and rich fossil content.
- 46. Time characterized by the diversification of early dinosaurs and marine reptiles.
- 49. Time characterized by significant mammal evolution and development of modern species.