A coprolite's fossilized animal dung. 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. The name's derived from the Greek words κοπρος / kopros meaning 'dung' and λιθος / lithos meaning 'stone'. They were first described by William Buckland in 1829. Prior to this they were known as "fossil fir cones" and "bezoar stones." They se… (More on Coprolites)