Trace fossil

A trace fossil, also called an ichnofossil, is a fossil record of biological activity by lifeforms, but not the preserved remains of the organism itself. Trace fossils contrast with body fossils, which are the fossilized remains of parts of organisms' bodies, usually altered by later chemical activity or by mineralization. The study of such trace fossils is ichnology - the work of ichnologists.

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Source: Wikipedia · Image: Wikimedia Commons · CC BY-SA 3.0

TRACKWISE

Read the ground — animal tracks, gaits, and field-tracking know-how.

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