Urotrygonidae
Urotrygonidae arrain miliobatiformeen familia da. Ameriketako ur epel eta tropikaletan bizi dira.

Espezieak 
Hona hemen FishBasek proposatzen duen espezieen zerrenda:
 Urobatis generoa
 Urobatis concentricus Osburn & Nichols, 1916
 Urobatis halleri (Cooper, 1863)
 Urobatis jamaicensis (Cuvier, 1816)
 Urobatis maculatus Garman, 1913
 Urobatis marmoratus (Philippi, 1892)
 Urobatis tumbesensis (Chirichigno F. & McEachran, 1979)
 Urotrygon generoa
 Urotrygon aspidura (Jordan & Gilbert, 1882)
 Urotrygon caudispinosus Hildebrand, 1946
 Urotrygon chilensis (Günther, 1872)
 Urotrygon cimar López S. & Bussing, 1998
 Urotrygon microphthalmum Delsman, 1941
 Urotrygon munda Gill, 1863
 Urotrygon nana Miyake & McEachran, 1988
 Urotrygon peruanus Hildebrand, 1946
 Urotrygon reticulata Miyake & McEachran, 1988
 Urotrygon rogersi (Jordan & Starks, 1895)
 Urotrygon serrula Hildebrand, 1946
 Urotrygon simulatrix Miyake & McEachran, 1988
 Urotrygon venezuelae Schultz, 1949

Erreferentziak

Kanpo estekak
Urotrygonidae arrain miliobatiformeen familia da . Ameriketako ur epel eta tropikaletan bizi dira . Espezieak Hona hemen FishBasek proposatzen duen espezieen zerrenda : Urobatis generoa Urobatis concentricus Osburn & Nichols , Urobatis halleri ( Cooper , Urobatis jamaicensis ( Cuvier , Urobatis maculatus Garman , Urobatis marmoratus ( Philippi , Urobatis tumbesensis ( Chirichigno F. & McEachran , Urotrygon generoa Urotrygon aspidura ( Jordan & Gilbert , Urotrygon caudispinosus Hildebrand , Urotrygon chilensis ( Günther , Urotrygon cimar López S. & Bussing , Urotrygon microphthalmum Delsman , Urotrygon munda Gill , Urotrygon nana Miyake & McEachran , Urotrygon peruanus Hildebrand , Urotrygon reticulata Miyake & McEachran , Urotrygon rogersi ( Jordan & Starks , Urotrygon serrula Hildebrand , Urotrygon simulatrix Miyake & McEachran , Urotrygon venezuelae Schultz , Erreferentziak Kanpo estekak