[3] Kimberichnus often occurs in Russia and South Australia, where it is most abundant in the shape of multiple arcuate sets of ridges with fan-shaped arrangements.

[4][5] The traces occur in the Ediacaran sediments of the Russian White Sea and in South Australia, Kimberichnus was described from Russia.

[2] They most often occur as simple arcuate ridges arranged in sets, with an arrangement similar to that of fans; it is thought that these traces came from Kimberella rasping the microbial mat underneath it with its teethed Proboscis[3] The feeding patterns that are seen in these traces exclude any Arthropodal origin, they instead point to a creator that was most likely systematically excavating nutrients/food off of the microbial mats.

[6] This rapid diversification posed a challenge to Charles Darwin’s theory of evolution, as mid-19th century scientists had already discovered Early Cambrian fossils that highlighted the abrupt appearance of complex life forms.

Evidence indicates that Kimberella grazed on microbial mats using a proboscis with rows of teeth, leaving behind trace fossils known as Kimberichnus.