1896
Obolus (Schmidtia) obtusus sp. nov. — Mickwitz, pp. 167, fig. 2:23,24,33,34
1969
Obolus (Schmidtia) obtusus Mickwitz, 1896 — Gorjansky, pp. 27, fig. 2:11-20
1973
Schmidtitis obtusus (Mickwitz, 1896) — Biernat, pp. 54, fig. 1:1-5, text fig.3
1989
Oepikites obtusus (Mickwitz) — Popov et Khazanovitch, pp. 109, fig. 2:18,20-23