Urogymnus asperrimus Urogymnus africanus: synonym of Urogymnus asperrimus Urogymnus natalensis: synonym of Gymnura natalensis Urogymnus poecilura: synonym...

The Australian freshwater Urogymnus were described as a separate species, Urogymnus dalyensis, in 2008. The freshwater Urogymnus in New Guinea are probably...

The porcupine ray (Urogymnus asperrimus) is a rare species of stingray in the family Dasyatidae. This bottom-dweller is found throughout the tropical...

dorsal and caudal fins. All whiptail stingrays, except the porcupine ray (Urogymnus asperrimus), have one or more venomous stings near the base of the tail...

The mangrove whipray (Urogymnus granulatus) or whitetail stingray, is a species of stingray in the family Dasyatidae. It is widely distributed in the...

In a very small number of species, like the giant freshwater stingray (Urogymnus polylepis), the mother "cares" for her young by having them swim with...

The freshwater whipray (Urogymnus dalyensis) is a little-known species of stingray in the family Dasyatidae, found in a number of large rivers and associated...

The mumburarr whipray (Urogymnus acanthobothrium) is a species of whipray from northern Australia and southern Papua New Guinea, described in 2016. The...

reduced tail spine of this ray as an intermediate condition between Urogymnus, which is spineless, and Trygon (=Dasyatis), which has one or more spines...

The tubemouth whipray (Urogymnus lobistoma) is a little-known species of stingray in the family Dasyatidae, named for its distinctive, highly protrusible...