National marine sanctuary offices and visitor centers closed to the public; waters remain open

NOAA's national marine sanctuary offices and visitor centers are currently closed to the public, and in accordance with Executive Order 13991 - Protecting the Federal Workforce and Requiring Mask Wearing, all individuals in NOAA-managed areas are required to follow Centers for Disease Control and Prevention (CDC) guidance on mask-wearing and maintaining social distances. Sanctuary waters remain open for responsible use in accordance with CDC guidance, U.S. Coast Guard requirements, and local regulations. More information on the response from NOAA's Office of National Marine Sanctuaries can be found on

Skip to main content
Monterey Bay National Marine Sanctuary National Marine Sanctuaries Home Page National Oceanic and Atmospheric Administration Home Page

Research Technical Report

Stalked Crinoids Collected off California with Descriptions of Three New Genera and Two New Species of Hyocrinidae (Echinodermata)

Roux, M., and C.G. Messing (2017)

Pacific Science 71(3):329-365;


Five species of stalked crinoids collected at depths from 1,693 to 4,135 m off the California coast, chiefly on seamounts, are described. Four were photographed in situ and collected during Monterey Bay Aquarium and Research Institute cruises using ROV Tiburon. Four specimens with intact crowns are attributed to Bathycrinus equatorialis A. H. Clark, 1908a, previously known from a single stalk with basal ring collected in the central eastern Pacific. Parahyocrinus claguei Roux, n. gen., n. sp., here described from a growth series of six specimens, is closely related to Hyocrinus biscoitoi Roux, 2004 (herein transferred to Parahyocrinus Roux, n. gen.), from the East Pacific Rise, but differs in features of the tegmen, pinnules, and stalk articulations. The single, finely ornamented specimen of Tiburonicrinus ornatus Roux, n. gen., n. sp., displays an original arrangement of characters suggesting affinities with Thalassocrinus alvinae from the Gorda Ridge. Gephyrocrinus messingi Roux & Lambert, 2011, known from off British Columbia and California, is transferred as type species to Lamberticrinus Roux, n. gen., after a reexamination of its pinnule architecture. Specimens of the fifth species, Bathycrinus complanatus A. H. Clark, 1908b, were trawled off California by R/V New Horizon.