Fossilized structures such as tracks, burrows,
trails, footprints, tubes, borings, or tunnels produced by the
activities of an animal. The activities may include walking,
crawling, climbing, boring, tunneling, or resting on or in soft
sediment. Ichnofossils, also known as trace fossils, do not
preserve any parts of the animal that made the structures, but
only their traces. They are typically marked as a raised line or
depression in a sedimentary rock.














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