Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Echinodermata Bruguière, 1789 - echinoderms
     Subphylum Eleutherozoa Bell, 1891
       Class Echinoidea (Leske, 1778) - sea urchins and sand dollars
         Subclass Euechinoidea Bronn, 1860
           Superorder Atelostomata von Zittel, 1879 - irregular urchins
             Genus Cassidulus Lamarck, 1801
             Genus Echinolampus McClelland, 1840 see Genus Echinolampas Gray, 1825
             Genus Lovenia Desor, 1847
             Genus Maretia Gray, 1855
             Genus Urechinus Agassiz, 1879