The Atelostomata are a type 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
* order ''
Holasteroida''
(Durham & Melville, 1957)
* order ''
Spatangoida''
(L. Agassiz, 1840)
References
*
*
Echinoidea
Animal superorders
{{echinoidea-stub