[organisms]
see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
Phylum Echinodermata Bruguière, 1789 - echinoderms
Class Echinoidea (Leske, 1778) - sea urchins and sand dollars
Order Diadematoida Duncan, 1889
Family Aspidodiadematidae Duncan, 1889
1 Genus Aspidodiadema Agassiz, 1878
2 Genus Plesiodiadema Pomel, 1883