mold fossil - type of fossil that forms when sediments bury an organism and the sediments change into rocks, fossil record - it gives important information about the earth, relative age - tells the close age of a fossil but not the exact age, law of superstition  - how rocks are ordered to be able to tell you the relative age, fossil - the preserved remains of a animal from the past, enviormental conditions - are determined through fossils, preserved fossil - deceased animals stuck in ice, tar, amber that prevents them from decaying, a foot print/paw print in mud/sand - trace fossil, fossil records - show new life in the world and how evolution happened, Sedimentary - Where are most fossils formed?, on top of older rocks - sedimentry rocks pile atop eachother, according to law of supersotion where do younger rocks lay, index fossil is better when - the time period when the species lived is shorter,

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