Track: an impression made by a single foot.
Trackway: a number of tracks made during a single trip.
Trail: an impression made by an animal without legs.
Burrows: a hole or holes an animal dug into loose sediment (like mud).
Borings: a hole or holes an animal dug into a hard substrate (like wood or rock).
Eggs and Nests: shells that at one time would have contained babies and the nests that the babies would have been kept in.
Coprolites: poop that has become fossilized