Keratosa, the keratose sponges or horny sponges, is a subclass of demosponges.[2]
References
^Grant, R.E. 1861. Tabular view of the primary divisions of the Animal Kingdom, intended to serve as an outline of an elementary course of recent Zoology (Cainozoology), or the Natural history of existing animals. Walton and Maberly: London. i–vi + 1–91.
^Horny sponges and their affairs: On the phylogenetic relationships of keratose sponges. Dirk Erpenbeck, Patricia Sutcliffe, Steve de C.Cook, Andreas Dietzel, Manuel Maldonado, Rob W.M.van Soest, John N.A.Hooper and Gert Wörheide, Molecular Phylogenetics and Evolution, Volume 63, Issue 3, June 2012, Pages 809-816, doi:10.1016/j.ympev.2012.02.024
