Children (17 direct children, 17 direct and indirect children):
Smalleyed round stingray
Urotrygon microphthalmum
Chilean round ray
Thorny round stingray
Urotrygon aspidura
Spiny-tail round ray
Urotrygon venezuelae
Venezuela round stingray
Urotrygon simulatrix
Fake round ray
Urotrygon rogersi
Roger's round ray
Urotrygon cimar
Urotrygon munda
Munda round ray
Urotrygon caudispinosus
Urotrygon serrula
Urotrygon peruanus
Urotrygon reticulata
Reticulate round stingray
Urotrygon nana
Dwarf round stingray
Urotrygon asterias
Urotrygon binghami
Urotrygon daviesi
Urotrygon goodei