Kingdom Animalia Linnaeus, 1758 - animals Phylum Echinodermata Bruguière, 1789 - echinoderms Subphylum †Blastozoa Sprinkle, 1973 see Infraphylum Blastozoa Sprinkle, 1973 Class †Blastoidea Say, 1825 Genus †Pentremites Sowerby, 1825