Eukaryota  >  Metazoa  >  Arthropoda  >  Pycnogonida

Family	Genus	Species
Ammotheidae	11	188
Ascorhynchidae	2	3
Austrodecidae	2	8
Callipallenidae	11	75
Colossendeidae	5	52
Endeidae	1	22
Nymphonidae	3	101
Pallenopsidae	2	60
Phoxichilidiidae	2	62
Pycnogonidae	3	27
Tanystylidae	2	31