Assertion: echinoderm's body | /r/HasProperty | theca
Facets:
Source sentences:
text: Pelmatzoans are ehinoderms that are radially symmetrical to some degree, have a generally cupshaped body (theca) enclosing
text: The basic body form of a crinoid is a stem (not present in adult feather stars) and a crown consisting of a cup-like central body known as the theca, and a set of five rays or arms, usually branched and feathery.