Children (17 direct children, 764 direct and indirect children):
Urolophidae
(tree size 58)
Gymnuridae
(tree size 47)
Potamotrygonidae
(tree size 46)
Platyrhinidae
(tree size 15)
Rhinopteridae
Urotrygonidae
(tree size 28)
Myliobatoidei
(tree size 333)
Stingray
Myliobatidae
(tree size 193)
Eagle rays
Hexatrygonidae
(tree size 9)
Sixgill stingrays
Plesiobatidae
(tree size 2)
Mobulidae
(tree size 2)
Dasyatoidea
(tree size 14)
Plesiobatoidea
Myliobatoidea
Ceratopteridae
Mobuloidea
Ptychacanthus