sentence2_structure: The presence of an animal fossil in a rock<>gives<>evidence of the time period$$$the animal<>lived<>in
sentence1: Coprolites are classified as trace fossils as opposed to body fossils, as they give evidence for the animal's behaviour (in this case, diet) rather than morphology.
sentence2: The presence of an animal fossil in a rock gives evidence of the time period the animal lived in.
question: The presence of an animal fossil in a rock gives evidence of