Eukaryota  >  Metazoa  >  Arthropoda  >  Pycnogonida

Family	Genus	Species
Ammotheidae	11	196
Ascorhynchidae	2	3
Austrodecidae	2	8
Callipallenidae	12	79
Colossendeidae	5	94
Endeidae	1	22
Nymphonidae	3	105
Pallenopsidae	2	61
Phoxichilidiidae	2	65
Pycnogonidae	3	30
Tanystylidae	2	31