Dactyloidites asteroides (Fitch, 1850)

Description. Hypichnial, full relief, star-shaped structure, composed of 4–6 regularly arranged ridges (arms), radiating from the central part. The ridges are fusiform, circular or oval in cross-section. The central part of the burrow, where the ridges meet, does not display any swelling, but a small depression. One of the specimens discussed shows an indistinctly visible, circular shaft in the central part. The specimens preserved in the sandstone beds show only very indistinct spreites within the arms. Individual arms are 10–20 mm long, 4–9 mm wide. The whole structure is 30–43 mm wide.