This is a starfish fossil. Fossils are preserved remains or traces of animals, plants or organism's from the past. This fossil is A Mold or Cast. It is because the original remains dissolved and the mud or sediment seeped in and made a mold.
This is a mammoth fossil. It is a Original Remain because it was frozen and it is almost completely intact. They are preserved in its entirety.
Darn... it didn't have all the info i needed for a school project :/
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