Eukaryota  >  Metazoa  >  Chordata  >  Chondrichthyes  >  Myliobatiformes

Family	Genus	Species
Dasyatidae	18	217
Gymnuridae	2	35
Hexatrygonidae	1	2
Myliobatidae	6	70
Plesiobatidae	1	1
Potamotrygonidae	5	195
Urolophidae	2	23
Urotrygonidae	2	12