1:00
en
CR
Geological Time Scale
32
Extinct: Means no longer of existence.
Fossil: Any preserved evidence of an organism.
Evolution: Any process of formation or growth.
Amber: Preserved tree sap traps an organism. The sap hardens into ___ and preserves the trapped organism.
Replacement: The original material of an organism is substituted with minerals that leave detailed replicas of of hard or soft parts of the organism.
Mold: Impression of an organism.
Cast : A mold filled with sediment.
Petrified: Empty pore spaces are filled in by minerals.
Cenozoic: Mammals form in this era. Human still inhabit it.
Mesozoic: Dinosaurs appear and become extinct during this era.
Paleozoic: Era started 488.3 million years ago. Sharks and bony fish appear along with the first vertebrates.
Neoproterozoic: The era when multi-cellular organism started to appear.
Neogene: The period in which we live in now.
Paleogene: Period before the Neogene. Started 55.8 million years ago.
Cretaceous: Last period of the Mesozoic era.
Jurassic: Dinosaurs scatter during this period.
Triassic: First period of the Mesozoic era. Dinosaurs appear.
Permian: Reptiles scatter during this period. The last period of the Paleozoic era,
Carboniferous: Period when insects scatter and amphibians appear.
Devonian: The first mass extinction occurred during this period.
Silurian: Land plants and insects appear during the ___ period.
Ordovician:First vertebrates appear in this period.
Cambrian: The period of the Cambrian explosion.
Ediacaran: The period with the first soft bodied organism.
Cyrogenian: Invertebrates and algae diversify in the period.
Tonian: Period with the first mulch-cellular organism.
Holocene: Humans form civilizations in this epoch.
Pleistocene: Epoch where the ice age occurred.
Pliocene: Hominins appear in the epoch of ___.
Miocene: Epoch of 5.3 million years ago. The apes appear.
Oligocene: Monkeys show up in the ____ epoch.
Eocene: Epoch from 33.9 million years ago. Flowering plants scattered.
Paleocene: Mammals, birds, and insects scatter during this epoch.
Geological Time Scale
Across:3. | Preserved tree sap traps an organism. The sap hardens into ___ and preserves the trapped organism. | 5. | The original material of an organism is substituted with minerals that leave detailed replicas of of hard or soft parts of the organism. | 6. | Humans form civilizations in this epoch. | 8. | Hominins appear in the epoch of ___. | 9. | Invertebrates and algae diversify in the period. | 14. | Impression of an organism. | 17. | Epoch from 33.9 million years ago. Flowering plants scattered. | 19. | Monkeys show up in the ____ epoch. |
| 22. | Means no longer of existence. | 25. | Period when insects scatter and amphibians appear. | 28. | A mold filled with sediment. | 29. | Era started 488.3 million years ago. Sharks and bony fish appear along with the first vertebrates. | 30. | Mammals form in this era. Human still inhabit it. | 31. | Reptiles scatter during this period. The last period of the Paleozoic era, | 32. | The period of the Cambrian explosion. |
| | Down:1. | First period of the Mesozoic era. Dinosaurs appear. | 2. | The first mass extinction occurred during this period. | 4. | Dinosaurs appear and become extinct during this era. | 7. | Empty pore spaces are filled in by minerals. | 10. | Any process of formation or growth. | 11. | Epoch of 5.3 million years ago. The apes appear. | 12. | The period in which we live in now. | 13. | Epoch where the ice age occurred. | 15. | The era when multi-cellular organism started to appear. |
| 16. | Mammals, birds, and insects scatter during this epoch. | 18. | The period with the first soft bodied organism. | 20. | Last period of the Mesozoic era. | 21. | Period with the first mulch-cellular organism. | 23. | First vertebrates appear in this period. | 24. | Period before the Neogene. Started 55.8 million years ago. | 26. | Any preserved evidence of an organism. | 27. | Land plants and insects appear during the ___ period. |
| |
© 2013
PuzzleFast.com, Noncommercial Use Only
Geological Time Scale
Across:3. | Preserved tree sap traps an organism. The sap hardens into ___ and preserves the trapped organism. | 5. | The original material of an organism is substituted with minerals that leave detailed replicas of of hard or soft parts of the organism. | 6. | Humans form civilizations in this epoch. | 8. | Hominins appear in the epoch of ___. | 9. | Invertebrates and algae diversify in the period. | 14. | Impression of an organism. | 17. | Epoch from 33.9 million years ago. Flowering plants scattered. | 19. | Monkeys show up in the ____ epoch. |
| 22. | Means no longer of existence. | 25. | Period when insects scatter and amphibians appear. | 28. | A mold filled with sediment. | 29. | Era started 488.3 million years ago. Sharks and bony fish appear along with the first vertebrates. | 30. | Mammals form in this era. Human still inhabit it. | 31. | Reptiles scatter during this period. The last period of the Paleozoic era, | 32. | The period of the Cambrian explosion. |
| | Down:1. | First period of the Mesozoic era. Dinosaurs appear. | 2. | The first mass extinction occurred during this period. | 4. | Dinosaurs appear and become extinct during this era. | 7. | Empty pore spaces are filled in by minerals. | 10. | Any process of formation or growth. | 11. | Epoch of 5.3 million years ago. The apes appear. | 12. | The period in which we live in now. | 13. | Epoch where the ice age occurred. | 15. | The era when multi-cellular organism started to appear. |
| 16. | Mammals, birds, and insects scatter during this epoch. | 18. | The period with the first soft bodied organism. | 20. | Last period of the Mesozoic era. | 21. | Period with the first mulch-cellular organism. | 23. | First vertebrates appear in this period. | 24. | Period before the Neogene. Started 55.8 million years ago. | 26. | Any preserved evidence of an organism. | 27. | Land plants and insects appear during the ___ period. |
| |
© 2013
PuzzleFast.com, Noncommercial Use Only