Eukaryota  >  Metazoa  >  Echinodermata  >  Echinoidea  >  Clypeasteroida

Genus	Species
Ammotrophus	1
Arachnoides	2
Astriclypeus	1
Clypeaster	12
Dendraster	1
Echinarachnius	1
Echinocyamus	2
Echinodiscus	1
Encope	12
Fellaster	1
Fibularia	2
Laganum	1
Lanthonia	2
Leodia	1
Mellita	31
Mellitella	1
Mortonia	1
Peronella	3
Rumphia	1
Scaphechinus	1
Sculpsitechinus	1
Sinaechinocyamus	1