What is another word for crinoidea?
Pronunciation: [kɹˈɪnɔ͡ɪdˌi͡ə] (IPA) 
Crinoidea is a term used to describe an ancient echinoderm class that dates back to the Paleozoic era. Synonyms for this term include sea lilies and feather stars. These creatures have a unique body structure with a central disc or calyx, which sprouts long arms that are often branched. The arms can be used for both feeding and movement. Despite being found in fossils dating back millions of years, crinoids can still be found today in oceans around the world. While the term Crinoidea is used most commonly by scientists, the more descriptive and simpler names of sea lilies and feather stars are often utilized in popular science articles and literature.
