Atelostomata

Atelostomata
Temporal range: Lower Jurassic–recent
Echinocardium cordatum
Scientific classification
Kingdom: Animalia
Phylum: Echinodermata
Class: Echinoidea
Superorder: Atelostomata
von Zittel, 1879
Orders

Cassiduloida
Holasteroida
Spatangoida

The Atelostomata are a superorder of sea urchins. They are distinguished from other sea urchins by their irregular shape and the absence of a feeding lantern. The group includes the well known heart urchins, as well as some less familiar and extinct forms.

List of orders

References


This article is issued from Wikipedia - version of the Saturday, September 27, 2014. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.