Across
- 1. How much of the species in the sea survived during the Permian?
- 5. What is the Holocene known as?
- 6. What were the only 2 continents in the Pennsylvanian era?
- 8. What kind of fish came about during the Silurian period?
- 10. The Pleistocene is the last epoch with what mammals lived in North America?
- 12. What was India drifting closer to during the Paleogene?
- 14. Where were the common Ordovician fossils often found?
- 16. What became a thing during the Paleogene?
- 20. What period was 251.902 - 298.9 years ago?
- 23. What did some animals have during the Cambrian period?
- 25. What time period lasted 43 million years?
- 27. What period was about 201.3 - 145 million years ago?
- 28. During the Permian period what was the single massive continent that formed called?
- 29. What was the Devonian Period sometimes called?
- 30. Where were the oldest known fossils found during the Silurian?
- 31. What was the climate like during the Eocene?
- 35. There was little to no what in the Paleocene epoch?
- 38. What was known as the oldest land plant during the Silurian period?
- 39. The Cretaceous period was the third longest period in what era?
- 40. The Australian part of Gondwana remained close to what during the Eocene?
- 42. Which Epoch was a relatively short span of time?
- 45. How many dinosaurs were there during the Jurassic period?
- 47. Age What is the Quaternary known as?
- 48. What was forming during the Cretaceous period?
- 50. How long ago did the quaternary start?
- 52. What was the most common fish during the Mississippian period?
- 53. What didn't appear until the end of the Jurassic period?
- 54. How long were the days during the Devonian Period?
- 56. What era did animals start laying hard-shelled eggs?
- 57. What period started about 145.5 million years ago?
- 58. What was a major change in the Pennsylvanian era?
Down
- 2. The Oligocene epoch was the 3rd epoch within what period?
- 3. What major ocean animals lived during the Pliocene?
- 4. What kind of flightless bird lived during the existed during the Miocene?
- 7. What was higher than modern day during the Miocene?
- 9. What were most of the continents like during the Cambrian period?
- 11. What era was the modern atmoshere developed?
- 13. What period lasted 35.7 million years?
- 15. What went extinct during the Holocene?
- 17. What age is the Precambrian era known as?
- 18. What epoch was 65.5 - 55.8 million years ago?
- 19. What may have lived in Kentucky during the Ordovician?
- 21. What started to appear on Earth during the Mississippian period?
- 22. What period was 419.2 - 358.9 million years ago?
- 24. What period is divided into 2 epochs?
- 26. What became the dominant land animals during the Eocene?
- 32. What epoch was split into 3 different sub-epochs?
- 33. What epoch had lots of tectonic movement?
- 34. How long ago was the Precambrian period?
- 36. What was growing large in size during the Paleocene?
- 37. The Pleistocene is known as what?
- 41. What period was the first geological period in the Palezoic era?
- 43. How long ago was the Oligocene?
- 44. What percent of marine species went extinct during the Triassic period?
- 46. What was formed during the Pliocene because of tectonic plates colliding?
- 49. What did Earth face during the Triassic period?
- 51. What period was the second period of the paleozoic Era?
- 53. What period did the first dinosaurs walk the land?
- 55. What era started 11700 years ago and is still the present-day era?