1830
Productus parallelus — Pander, pp. 89, fig. 27; 2a-c
1830
Productus cameratus — Pander, pp. 88, fig. 27; 3a-c
1830
Productus uncinatus — Pander, pp. 88, fig. 27; 4a-c
1927
Producorthis parallela Pander — Kozłowski, pp. 14, fig. 1; 14a-c, 15a-c
1953
Producorthis obtusa var. parallela (Pander) — Alichiova, pp. 46, fig. 4; 13, 14