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fossil British & World English

The remains or impression of a prehistoric plant or animal embedded in rock and preserved in petrified form

fossil English Thesaurus

fossils of eels have been found in rocks a hundred million years old

fossil fuel British & World English

A natural fuel such as coal or gas, formed in the geological past from the remains of living organisms

fossil ivory British & World English

Ivory from the tusks of a mammoth

fossil record British & World English

The record of the occurrence and evolution of living organisms through geological time as inferred from fossils

index fossil British & World English

A fossil that is useful for dating and correlating the strata in which it is found

trace fossil British & World English

A fossil of a footprint, trail, burrow, or other trace of an animal rather than of the animal itself

derived fossil British & World English

A fossil redeposited in a sediment which is younger than the one in which it first occurred