Wiktionary
ichnofauna
n. fauna that leaves tracks, spoor, footprints etc
Wikipedia
Ichnofauna
Ichnofauna is the diversity of fauna based on the ichnological ( tracks and footprints) evidences. This term is often used by vertebrate paleontologists.
Ichnofauna often uses parataxonomical names for tracks such as Deltapodus, Eubrontes, or Cruziana. Ichnofauna does not give a true content of the fauna assemblage, because of bias of preservation.