Eukaryota  >  Ciliophora  >  Heterotrichea  >  Heterotrichida

Family	Genus	Species
Blepharismidae	2	29
Chattonidiidae	1	1
Climacostomidae	1	5
Condylostomatidae	4	27
Fabreidae	1	1
Folliculinidae	7	14
Maristentoridae	0	1
Peritromidae	1	6
Spirostomidae	3	47
Stentoridae	3	31