1. Abel, O., 1935: Vorzeitliche Lebensspuren. — 644 pp. Jena
2. Bather, F. A., 1911: Upper Cretaceous Terebelloids from England. — Geol. Mag. [5]8, 481–7, 549–56.
3. Bourne, D, W. &Heezen, B. C., 1965: A wandering enteropneust from the abyssal Pacific, and the distribution of «spiral» tracks on the sea floor. — Science150, 60–63.
4. Chapman, F., 1929: On some remarkable annelid remains from the Arthur River. N. W. Tasmania. — Pap. Proc. Roy. Soc. Tasmania, (1928), 1–5.
5. Crook, K., 1961: Stratigraphy of the Parry Group (Upper Devonian-Lower Carboniferous), Tamworth-Nundle District, N. S. W. — J. Proc. Roy. Soc. N. S. W.94, 189–207.