Eukaryota  >  Ciliophora  >  Litostomatea  >  Haptorida

Family	Genus	Species
Acropisthiidae	3	8
Actinobolinidae	3	8
Apertospathulidae	1	3
Didiniidae	3	11
Dileptidae	5	19
Dimacrocaryonidae	4	11
Enchelyidae	2	5
Helicoprorodontidae	1	3
Homalozoonidae	1	1
Lacrymariidae	4	25
Paraspathidiidae	1	2
Pseudoholophryidae	2	4
Pseudotrachelocercidae	1	1
Spathidiidae	12	45
Tracheliidae	3	6
Trachelophyllidae	7	24