Thatchtelithichnus holmani Zonneveld, Bartels, Gunnell et McHugh, 2015

Diagnosis.—Circular to subcircular grooves with a central boss or platform, bored into a bone substrate. Grooves penetrate into the cortical layer of the bone. The central platform may consist of an unmodified platform or a rounded nubbin. Burrow walls rounded, convex. or sharp and perpendicular to the external substrate surface.