Across
- 4. term used for 100% of a species going extinct
- 7. the name for buildup of sediment
- 8. a period in which marine life first appeared (vertebrates) (fish)
- 9. the item that gets fossilized
- 10. appearance of first dinosaurs
- 12. another word for the same type of animal
- 13. what happens when you look at medusa
- 15. large flaming ball in space
Down
- 1. period in which amphibians first appeared
- 2. appearance of flowering plants
- 3. the name for someone who study's fossils
- 5. the name for multiple periods of time
- 6. the discharge of magma becoming lava
- 11. the finished product of Petrification
- 13. multiplication of reptile species
- 14. the adjustment to living conditions