Crinoids , also known as sea lilies or feather-stars , are marine animals that make up the class Crinoidea of the echinoderms -LRB- phylum Echinodermata -RRB- .

Crinoids , also known as `` sea lilies '' or `` feather-stars '' , are marine animals . They make up the class Crinoidea of the echinoderms -LRB- phylum Echinodermata -RRB- .
