•Is a visible shape that was left after
an animal or plant was buried in
sediment and then decayed was away
•Is a hole in rock
•A example is a hole in rock from a
shell
•Cast fossil is a solid model in the shape
of the organism
•Fills the mold fossils
•Example is a shell that fills the
mold fossil
Cast
•Some thing that was was living that was
turned into stone
•Mostly found in deserts because of all
of the quarts in the sand
•Example of one is petrified wood.
•Is a imprint of a once living thing
•Some times after a living thing
dies it will leave a visible layer of
carbon
•Like a picture
•Fossil of activities
•Includes footprints, eggs, poop, and
homes
•Means that there were a lot at one
time
•They are used to figure out when rock
layers had formed (relative dating)
•An example is the trilobite
FOUND IN ICE, TAR AND AMBER- PRESERVED REMAINS