Roux M, Lambert P.

Two new species of stalked crinoids from the northeastern Pacific in the genera Gephyrocrinus and Ptilocrinus (Echinodermata, Crinoidea, Hyocrinidae). Effects of ontogeny and variability on hyocrinid taxonomy

. Zootaxa [Internet]. 2011 Apr. 20 [cited 2025 May 2];2825(1):1–54. Available from: https://www.mapress.com/zt/article/view/zootaxa.2825.1.1