Across
- 4. trace of a once existing organism
- 5. the broken down organism of an animal
- 6. combining elements or parts to form a whole
- 9. a data base which holds all the fossil records
- 10. place in sea that contains high concentration of salts
- 12. hole or tunnel in the ground
- 13. extinct genius of clupeid
- 14. genus of a trilobite
- 15. the formations of rock
Down
- 1. a prehistoric genus plant
- 2. sedimentary rock usually cemented together
- 3. makes impressions on a wall
- 7. stone mass containing fossilized fecal matter of animals
- 8. small species of land snail
- 11. broken down plant and dead plant remains