Cyclocystoidea

Cyclocystoidea

[¦sī·klō·si′stȯid·ē·ə]
(paleontology)
A class of small, disk-shaped, extinct echinozoans in which the lower surface of the body probably consisted of a suction cup.
References in periodicals archive ?
Review of the extant class Concentricycloidea and reinterpretation of the fossil class Cyclocystoidea.