Fossils

A

ammonites

 - An extinct shelled creature

B

body fossils

 - Fossils of bodies of living creatures - includes bones, feathers, skin, fur and teeth

C

cephalopods

 - Marine animals that include squid, octopus and other boneless animals

D

decaying

 - rotting

I

invertebrates

 - Animals without a spine

O

organisms

 - Living things

P

Paleozoic Era

 - Between 251 million to 542 million years ago

plant fossils

 - Fossils of leaves, seeds, bark, etc.

prehistoric

 - Before anyone was around to write history

preserved

 - Kept from decaying

S

sedimentary rocks

 - Rocks formed by layering of material in water

stromatolites

 - Layered mound fossils - oldest known fossils

T

trace fossils

 - Footprint fossils - also eggs, leaf impressions, anything that leaves just a trace of evidence

trilobites

 - Extinct marine animal