Notocrinoidea is a superfamily of echinoderms. There are 5 species of Notocrinoidea, in 2 genera and 2 families. It includes groups like Aporometridae and Notocrinidae. They rely on swimming to move around.
Definition: Hard framework, internal or external, which supports and protects softer parts of plant, animal or unicellular organism, and to which muscles usually attach in animals, includes skeletons (derived from Lawrence, 2005).