Kingdom Animalia Linnaeus, 1758 - animals Phylum Porifera Grant, 1836 - sponges Class Demospongiae Sollas, 1885 - demosponges Order Spirophorida Bergquist & Hogg, 1969 see Suborder Spirophorina 1 Family Tetillidae Sollas, 1886 2 Family Samidae Sollas, 1888 [monotypic] 3 Family Spirasigmidae Hallmann, 1912