Across
- 3. Type of fossil that shows us dead animals activities. EX. footprint, burrow, etc.
- 4. Heat and pressures causes this type of fossil. Ex. Oil
- 6. _________ extinction, biggest extinction event in Earth's History
- 8. 90% of Earth's History was during this Era
- 11. This is known as the age of the mammals
Down
- 1. Over time, minerals take the place of calcium in bones
- 2. This is known as the age of the Fish
- 5. Total Preserved organism
- 7. Dinosaurs were the dominant animal during this Era.
- 9. The 3D shape that is created after sediments fill in the empty space.
- 10. The cavity left behind after an organism decays.