Eukaryota  >  Metazoa  >  Chordata  >  Ascidiacea  >  Aplousobranchia

Family	Genus	Species
Clavelinidae	2	24
Diazonidae	2	4
Didemnidae	6	157
Euherdmaniidae	1	1
Polycitoridae	7	58
Polyclinidae	4	79
Pseudodistomidae	1	4
Pycnoclavellidae	1	15
Synoicidae	1	1