What Word Means The Remains Or Imprints Of Once-living Organisms Found In Layers Of Rock?

What Word Means The Remains Or Imprints Of Once-living Organisms Found In Layers Of Rock? Fossils are the preserved remains, or traces of remains, of ancient organisms. Fossils are not the remains of the organism itself! They are rocks. A fossil can preserve an entire organism or just part of one. What is the remains