Kingdom Animalia Linnaeus, 1758 - animals Phylum Echinodermata Bruguière, 1789 - echinoderms Subphylum Eleutherozoa Bell, 1891 Class Holothuroidea (de Blainville, 1834) - sea cucumbers Subclass Dendrochirotacea Genus Cucumaria Blainville, 1830 Genus Psolus Oken, 1815 Genus Thyone Oken, 1815