Erytholus is a form genus for problematic fossils of Cambrian age in South Australia.

It has been of special interest because of its morphological similarity with the Ediacaran fossil Ventogyrus, and may have been a late surviving vendobiont.

[1] Erytholus is a globose, chambered fossil, with associated vertical tubular structures.

It is found at depths of 20–30 centimetres (7.9–11.8 in) within paleosols.

Its affinities are uncertain, although it bears a general resemblance to truffles.