What is a fossil?
A living organism
The preserved remain of a once living organism
The excrement of a dead animal
sediment, layers, movement, erosion
How do fossils help us?
Give us clues of how organisms lived long ago.
Give us images of the organisms that lived long ago.
They don't help in any way.
They don't show how evolution has occurred.
What are some types of fossil?
mold and cast, coprolite, and sediment.
layers, sediment, and erosion
anatomical, fossil and trace.
carbon films, petrified fossils, and coprolites.
How is a mold formed?
When layers of sediment accumulate above.
When parts of an organism are buried in sediment.
How is a cast formed?
As the result of a mold.
When a footprint is left.
Petrified fossils mean turn into stone.
What is coprolite?
The excrement of a once living organism.
Footprint of an organism buried in sediment.
Three examples of a preserved remain are tar, ice, and stone
Trace fossil is not the footprint of an animal left in sediment.
What is carbon films?
carbon remains of an organism buried in sediment.
Amber, tar, and ice.
The first step of a fossil formation is sediment.
Layers of sediment accumulated above the fossil is the 3 step of fossil formation.
What happens in the third step?
an animal is buried in sediment.
movement of the Earth push the fossil up.
Erosion is the 4 step of a fossil formation.
