Type species of the genus: Hyocrinus bethellianus Wyville Thomson, 1876
Synonymy: Hyocrinus Thomson, 1876: 47; Carpenter, 1884: 217; A.H. Clark, 1915: 162; Mironov & Sorokina, 1998 b: 30–31; Roux, 2002: 174; Roux & Lambert, 2011: 45 –46, 48– 52, fig. 33; Hess, 2011 b: T 173.