Eukaryota  >  Metazoa  >  Porifera  >  Hexactinellida  >  Sceptrulophora

Family	Genus	Species
Aphrocallistidae	2	5
Auloplacidae	1	1
Craticulariidae	1	1
Euretidae	9	13
Farreidae	4	17
Tretodictyidae	4	11
Uncinateridae	1	4