1856
Poteriocrinus biplex — eichwald, pp. 121
1857
Poteriocrinus biplex — Eichwald, pp. 67
1860
Poteriocrinus biplex — Eichwald, pp. 162
1860
Poteriocrinus biplex — Eichwald, fig. XXXI 22
1964
Pentagonocyclicus biplex (Eichwald), 1860 — Yeltyschewa, pp. 71, fig. III 12-14, IV 21
1980
Pentagonocyclicus biplex — Hynda, pp. 67, fig. 6,7,8
1986
Crenatocrinus biplex (Eichwald, 1860) — Hynda, pp. 102, fig. XVI 9-12