Atelostomata

Atelostomata

[ə‚tel·ə′stōm·əd·ə]
(invertebrate zoology)
A superorder of echinoderms in the subclass Euechinoidea characterized by a rigid, exocylic test and lacking a lantern, or jaw, apparatus.
References in periodicals archive ?
Superorder Atelostomata Order Cassiduloida Family Echinolampadidae Genus Echinolampas GRAY, 1825 Echinolampas cfr.
Superorder Atelostomata Order Spatangoida Suborder Micrasterina Family Spatangidae Genus Spatangus GRAY, 1825 Spatangus corsicus DESOR P1.7, fig.