Eukaryota  >  Metazoa  >  Tardigrada  >  Heterotardigrada

Family	Genus	Species
Batillipedidae	1	12
Coronarctidae	1	1
Echiniscidae	19	232
Echiniscoididae	3	83
Halechiniscidae	6	19
Oreellidae	1	2
Renaudarctidae	2	2
Stygarctidae	2	6
Styraconyxidae	6	9
Tanarctidae	2	5