Geologic Time Crossword

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Across
  1. 4. The ____ Epoch is the last epoch of the Paleogene Period.
  2. 8. The Oglicene Epoch is subdivided into the ____ and the Chattian.
  3. 10. One of the biggest animals in the Cambrian Period is the ____.
  4. 11. How many Epochs is the Quaternary divided into?
  5. 12. Our current Epoch
  6. 15. A mass ____ took place in the Holocene Epoch because of humans.
  7. 16. The ____ Epoch is split into 3 sub-epochs.
  8. 19. ____ percent of Earth's surface was covered in ice.
  9. 20. The earth went through many important changes during the ____ Period.
  10. 21. The ____ tree became present in the Eocene Epoch.
  11. 23. During the Miocene Epoch, ____ and Asia collide.
  12. 24. Animals like the ____ became bigger as they moved into larger spaces.
  13. 29. ____ came from the Greek word for old or older.
  14. 31. During the Eocene Epoch, ____ became the dominant land animals.
  15. 32. North America and ____ were the only continents in the Pennsylvanian Period.
  16. 35. Hominids began to evolve in the ____ Epoch.
  17. 37. Up to ____ marine species went extinct in the Triassic Period.
  18. 41. The ____ was the largest marine animal in the Devonian Period.
  19. 43. The ____ Period is the longest period of the Phanerozoic.
  20. 44. ____ marine organisms like nautiloids and brachiopods existed in the Permian Period.
  21. 46. Unfortunately, the T-Rex wasn't in the ____ Period.
  22. 47. Climate change and rising sea levels caused the ____ Extinction.
  23. 49. The sea levels during the Miocene Epoch dropped ____ meters due to glaciation.
  24. 52. The Ordovician Period was defined by Charles ____ in 1879.
  25. 53. The oceans became more ____ during the Paleocene Epoch.
  26. 54. The name Cretaceous comes from the Latin word for ____.
  27. 55. The ____ Period is mostly known for the diverse marine invertebrates.
  28. 56. An ice age occurred during the ____ Period.
  29. 57. The Pleistocene epoch is the ____ epoch of the Quaternary Period.
  30. 58. The ____ National Park was formed during the Precambrian Period.
Down
  1. 1. The Jurrasic Period ended when the ____ meteor hit the earth.
  2. 2. The supercontinent ____ began to drift apart in the Jurrasic Period.
  3. 3. The ____ shark lived during the Pliocene Epoch.
  4. 5. The first ____ appeared during the Cambrian Period.
  5. 6. In the Precambrian Period, an ____ was formed around Earth.
  6. 7. The most formidable animal in the Devonian Period is the armored ____.
  7. 9. The Oligocene Epoch is the third epoch of the ____ Era.
  8. 13. During the ____ Period, the days were only 22 hours long.
  9. 14. Common ____ from the Mississippian Period include clams and snails.
  10. 17. The Quarternary period is in the _____ Era.
  11. 18. The ____ is one of the two most recent Epochs.
  12. 19. ____ were first a thing in the Paleogene Period.
  13. 22. The ____ Sea was a flat grassland in the Pliocene Epoch.
  14. 25. Nearly all ____ species died in an extinction event during the Permian Period.
  15. 26. Evolution of ____ plants brought true forests to the Permian Period.
  16. 27. The ____ Period is the first time period in the Paleozoic Era.
  17. 28. Current time period.
  18. 30. The Paleogene Period lasted ____ million years.
  19. 33. Giant ground ____ were around during the Paleogene Period.
  20. 34. The first ____ began to fly up in the sky in the Triassic Period.
  21. 36. The country of South ____ was an island during the Paleocene Epoch.
  22. 38. Shallow seas covered North America in the ____ Period.
  23. 39. Dinosaurs roamed ____, even with the long, cold nights.
  24. 40. In the Silurian Period, ____ plants became more common.
  25. 42. Temperatures in the Permian Period reached up to 165 degrees ____.
  26. 45. The Holocene Epoch is also known as the _____.
  27. 48. The ____ Period goes back to the beginning of the earth's life.
  28. 50. Some of the more common marine invertebrates in the Ordovician Period include graptolites and ____.
  29. 51. The Silurian Period contained the ____, which is the oldest known plant.
  30. 55. The ____ Mountains were formed during the Mississippian Period.