Rahiolisaurus belongs to the family of abelisaurid theropod dinosaur that has been found existed in the Maastrichtian age of late Cretaceous period, over 72 to 66 million years ago. The fossil remains of this species was first recovered in India, Gujurat - Lameta Formation. This carnivore species comes under the classification of Chordata, Dinosauria, Theropoda, Abelisauridae, Majungasaurinae.
The species was named by Fernando E Novas, Sankar Chatterjee, Dhiraj K. Rudra & P. M. Datta in 2010. Only partial skeletal remains of the species were found till date. These fossils include elements from seven different individuals of varied ages. Rahiolisaurus is the large-sized abelisaurid dinosaur that measures around 8 m (26 ft) long. The species shares many similarities with Indian abelisaurid group, but slightly differs in the skeletal structure of gracile and slender-limbed form.