(Placospongiidae) (Placospongiidae) is a biological family of the class Demospongiae and order Hadromerida.
Acanthochaetetidae
Alectonidae
Choanitidae
Clionaidae
Hemiasterellidae
Placospongiidae
Polymastiidae
Sollasellidae
Spirastrellidae
Stylocordylidae
Suberitidae
Tethyidae
Timeidae
Trachycladidae