Eukaryota  >  Metazoa  >  Chordata  >  Ascidiacea  >  Aplousobranchia

Family	Genus	Species
Clavelinidae	2	30
Diazonidae	2	6
Didemnidae	7	164
Euherdmaniidae	1	2
Polycitoridae	7	61
Polyclinidae	4	84
Pseudodistomidae	1	5
Pycnoclavellidae	1	15
Synoicidae	1	1