World Register of Marine Species (WoRMS)
Messing, C.; Gondim, A.I.; Markello, K.; Poatskievick Pierezan, B.; Taylor, K.; Eléaume, M. (2026). World List of Crinoidea. Phrynocrinidae AH Clark, 1907. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=123146 on 2026-08-02
Clark, A. H. (1907). Two new crinoids from the North Pacific Ocean. Proceedings of the U.S. National Museum. 32: 507-512.