ichno-, ichn-

(Greek: track, trace, footprint; pertaining to fossil footprints)

Divination with the interpretations of personality and appearances of people by studying their footprints, posture, and position.
A branch of ichnology (branch of paleontology as represented by fossils) concerned with the study of modern traces (such as burrows, trails, etc.) created by organisms on and within fresh sediments.
palaeoichnology, paleoichnology (s) (noun) (no plural)
The study of fossil animals and plants in order to deduce their ecology and the environmental conditions in which they lived