Petrosiidae

Petrosiidae is a family of sponges, first described in 1980 by Rob van Soest which  contains the following four genera:
 * Acanthostrongylophora Hooper, 1984
 * Neopetrosia de Laubenfels, 1949
 * Petrosia Vosmaer, 1885
 * Xestospongia de Laubenfels, 1932