1. PRESERVED REMAINS OR TRACES OF AN ORGANISM THAT LIVED IN THE PAST.
FOSSILS
PRESERVED REMAINS OR TRACES OF AN ORGANISM THAT LIVED IN THE PAST.

2. Fossils are usually from more than 10,000 years ago…
Fossils give clues to:
1.)The diversity of living things over Earth’s history.
2.) The past climate and surface changes.
3.) The changes with organisms over time (adaptations).

3. Fossils are categorized by…
HOW THEY FORM!
1.) Mold Fossil:
Sediments bury an organism, and sediments change into rock; organism decays leaving a cavity.

4. 2. Cast Fossil:
Mold is filled in with sand or mud that hardens and makes a copy.

5. 3. Petrified Fossil (Permineralized Fossil):
Minerals soak into buried remains, replacing the remains and changing them into rock.
Quartz

6. 4. Preserved (Original Remains) Fossil:
Decaying of organism is prevented by being trapped in rock, ice, tar or amber.

7. 5. Carbonized Fossil:
Organisms are pressed between layers of soft mud or clay that hardens squeezing almost all the decaying organism away leaving the carbon imprint in the rock.

8. 6. Trace Fossil:
Forms when mud or sand hardens to stone where a footprint, trail, or burrow of an organism was left behind.

9. What is it? Mucrospirifer Thedfordensis
“Butterfly Shell”, shelled marine organism.

10. What is it?
Ammonite
Same family as octopus and squid

11. What is it?
Tabulophyllum….
CORAL!

12. What is it? Some swam and some remained on land.
Elrathi Kingi aka trilobite
Most popular Index Fossil
Some swam and some remained on land.

13. What is the admetopsis subfusiformis?
SNAIL Family

15. What is the goniobasis tenera?
an extinct species of freshwater snails