Fossils

Fossils

Fossils- trace or remains —→ an organism → lived long ago

What rocks are FOSSILS found in?

Sedimentary Rocks

Why are fossils found more in the sea than land organisms?

deep waters —→ persever organisms

Mineral Replacement

(Think of the _______ Forest)

• Minerals replace cells,

petrified

PETRIFIED FOREST

What is a Mold Fossil?

• Fossil forms —→ organism decays [or dissolves] —→ leaves cavity in rock

Cast Fossil

• Fossil forms —→ mold fills with sediment —→ hardens into rock —→ making a replica

Original Remains Fossil (part 1)

These are fossils —→ contain original parts of actual organism.

Bones, entire body, teeth*

Original Remain Fossils (part 2)

Tar Pit – oil pool traps

organism - preserves —→ due to lack of oxygen

Amber - fossilized tree with insects sap

• Freezing or marsh – entire organism **

Trace Fossils

Preserved burrows - footprints - trails, - or any marks tells how it lived

Are all living things are made of Carbon?

ABSOLUTELY!!!!!!!!!!!

Carbon Film Fossil

film of carbon left on a rock by a decaying organism

Index Fossils

• Species —→ lived for a short time —→ were numerous —→ found in many places.

Is the Oldest perserved organisms found in the top layer or the bottom layers?

bottom layers.

is the youngest found on the top or bottom layers?

TOP layers!!!!!!