Some mummified fossils include mammoths found frozen in the arctic permafrost, which are preserved by the cold just as a freezer preserves food. In the Kits: #12: Shark tooth (specifically, the enamel ...

Glaciers and permafrost can preserve an entire organism. Only very young - Pleistocene - fossils are preserved this way. 7. Recrystallization: The original skeletal material has grown into new ...