Rozhnov, S. V. (2020). Streptoiocrinus gen. nov. (Disparida, Crinoidea) from the Lower and Middle Ordovician of the Leningrad Region, and Fluctuating Asymmetry of Radial Symmetry. Paleontological Journal. 54(7): 704-714.
Streptoiocrinus gen. nov. (Disparida, Crinoidea) from the Lower and Middle Ordovician of the Leningrad Region, and Fluctuating Asymmetry of Radial Symmetry