fossil - the preserved remains or evidence of past living organisms, mold - The impression of an organism in a rock, cast - a fossil copy of an organism made when a mold of the organism is filled with sediment or mineral deposits, carbon film - a type of fossil consisting of an extremely thin coating of carbon on rock, trace fossil - the preserved evidence of the activity of an organism, paleontologist - A scientist who studies fossils, catastrophism - the idea that conditions and organisms on Earth change in quick, violent events, uniformitarianism - a principle stating that geologic processes that occur today are similar to those that occurred in the past,

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