Radulichnus

Paired fine ridges, arranged in fans and occasionally associated with Kimberella in South Australia and the White Sea region represent structures analogous to mollusk radula-type grazing (Gehling, 1996; Seilacher, 1995, 1997; Fedonkin, 2003; Seilacher et al, 2003, 2005; Gehling et al, 2005). The animal was located at the apex of the fan from which it appears to have scraped biomats with an extensible proboscis (Gehling et al., 2005). This trace fossil is broadly analogues to the rasping trace fossils of mollusks (Radulichnus) and echinoids (Gnatichnus). The Ediacaran raspings have been assigned to Radulichnus (Seilacher 1995) but are sufficiently different in morphological details and preservation that they should be assigned to a new ichnogenus (cf., Gehling, 1996).

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