The trace is in the form of a thin, smooth arc, loosely twisted into a right-hand spiral.
Literature:
Ivantsov, A.Yu., Gritsenko, V. P.; Paliy, V. M., Velikanov, V.A., Konstantinenko, L. I., Menasova, A. Sh., Fedonkin, M. A., Zakrevskaya, M. A. and Serezhnikova, E.A., 2015. Upper Vendian macrofossils of Eastern Europe, Middle Dniester area and Volhynia. PIN, RAS, 144 (in Russian)