Crinoidea

 
Pronunciation: /krʌɪˈnɔɪdɪə/

plural noun

Zoology
  • a class of echinoderms that comprises the sea lilies and feather stars. They have slender feathery arms and (in some kinds) a stalk for attachment, and were abundant in the Palaeozoic era.

Origin:

modern Latin (plural), from Greek krinoeidēs 'lily-like', from krinon 'lily'