Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Echinodermata Bruguière, 1789 - echinoderms
     Subphylum Asterozoa von Zittel, 1895 see Infraphylum Asterozoa von Zittel, 1895
       1 Class Asteroidea Blainville, 1830 - sea stars
       2 Class Ophiuroidea Gray, 1840 - brittle stars and basket stars