noun

1. the study of the fate of the remains of organisms after they die, especially the study of fossilization

noun (plural trace fossils)

1. A type of fossil reflecting the reworking of sediments and hard substrates by organisms, rather than the physical remains of the organism itself. This includes structures such as burrows, trails, impressions, coprolites and borings.

noun

1. any large bipedal carnivorous dinosaur, of the family Tyrannosauridae, that lived in North America during the Cretaceous period