Diplopodichnus biformis Brady, 1947

Description. Trackways formed by two continuous, smooth and parallel ridges, separated by a median groove, with width greater than that of the ridges. The trajectory is rectilinear to slightly curved, and no ornamentation is observed. Total width of the trackway ranges from 3.10 to 4.21 mm and width of the median groove varies between 1.70 mm and 2 mm. Preserved in positive hyporelief.

According to Keighley & Pickerill (1996), Diplopodichnus is the intermediate preservation mode of the ichnogenera Cruziana (deep furrows) and Diplichnites (epistratal trackways).