Loxolenichnus halo (Neumann et Wisshak, 2009)

Diagnosis: Central hole with parallel smooth walls (pit in case of incomplete penetration) surrounded by one or more circular depressions.

Differential diagnosis: Oichnus halo isp. n. isp differs from all other Oichnus ichnospecies by the presence of a circular groove surrounding the central pit or penetration. The new ichnospecies is distinguished from the closely related ichnospecies Allenusichnus circularis Santos, Mayoral and Muñiz, 2003 and A. undularis Santos, Mayoral and Muñiz, 2003 as well as Centrichnus concentricus Bromley and Martinell, 1991 by the presence of a central penetration in mature and non-healed traces.