Eukaryota  >  Metazoa  >  Tardigrada  >  Heterotardigrada

Family	Genus	Species
Batillipedidae	1	12
Coronarctidae	1	1
Echiniscidae	20	251
Echiniscoididae	3	83
Halechiniscidae	6	19
Oreellidae	1	3
Renaudarctidae	2	2
Stygarctidae	2	6
Styraconyxidae	11	10
Tanarctidae	3	5