''Radulichnus'' is an
ichnogenus
An ichnotaxon (plural ichnotaxa) is "a taxon based on the fossilized work of an organism", i.e. the non-human equivalent of an artifact. ''Ichnotaxa'' comes from the Greek ίχνος, ''ichnos'' meaning ''track'' and ταξις, ''taxis'' meaning ...
of
trace fossil
A trace fossil, also known as an ichnofossil (; from el, ἴχνος ''ikhnos'' "trace, track"), is a fossil record of biological activity but not the preserved remains of the plant or animal itself. Trace fossils contrast with body fossils, ...
which resembles the marks produced by the action of a
mollusc's
radula on sediment. As an ichnogenus, its classification is based solely on ''appearance'', and does not necessarily imply anything of the affinity of the organism which produced the trace.
However, fossils of ''
Kimberella
''Kimberella'' is an extinct genus of bilaterian known only from rocks of the Ediacaran period. The slug-like organism fed by scratching the microbial surface on which it dwelt in a manner similar to the gastropods, although its affinity with t ...
'' have been found at or near the ends of ''Radulichnus'' traces, leading to the possibility that some traces were made by ''Kimberella''.
References
Trace fossils
{{trace-fossil-stub