Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Echinodermata Bruguière, 1789 - echinoderms
     1 Subphylum †Homalozoa Whitehouse, 1941
     2 Subphylum Pelmatozoa Leuckart, 1848
     3 Subphylum Eleutherozoa Bell, 1891