Learn how to say Comatulid correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word comatulid:
(plural) -lids, -lae (-liː)
any of a group of crinoid echinoderms, including the feather stars, in which the adults are free-swimming
C19: from New Latin Comatulidae, from Comatula type genus, from Latin comātus hairy