Scolicia Quatrefages, 1849

Diagnosis.—Variable and selectively preserved, simple, winding to meandering to coiling, bilobate or trilobate backfilled burrows; may have one or two parallel, locally discontinuous strings along base; area between strings flat to slightly convex; cross sections circular to oval; geopetal meniscate backfill common but massive burrow infill also common (Häntzschel, 1975; Uchman, 1995).

Diagnosis Closely and complexly annulated, essentially horizontal trilobed trails having major lateral lobes anda subordinate median lobe or furrow.