Kingdom Animalia Linnaeus, 1758 - animals Phylum Porifera Grant, 1836 - sponges Class Hexactinellida Schmidt, 1870 - hexactinellids Subclass Hexasterophora Schulze, 1886 Order Fieldingida Tabachnick & Janussen, 2004 [monotypic] see Suborder Sceptrulophora Mehl, 1992 1 Family Fieldingiidae Tabachnick & Janussen, 2004 [monotypic]