Eukaryota  >  Metazoa  >  Echinodermata  >  Echinoidea  >  Spatangoida

Genus	Species
Abatus	9
Agassizia	1
Amphipneustes	4
Archaeopneustes	0
Brachisternaster	1
Brachysternaster	1
Breynia	1
Brisaster	1
Brissopsis	7
Brissus	25
Echinocardium	14
Eupatagus	1
Eurypatagus	1
Hypselaster	2
Linopneustes	1
Lovenia	3
Meoma	2
Metalia	2
Moira	1
Nacospatangus	1
Nudechinus	1
Ova	1
Paleopneustes	1
Paramaretia	1
Paraster	0
Pericosmus	1
Plagiobrissus	1
Schizaster	1
Schizocosmus	1
Spatangus	4
Tripylus	1