"Rajasaurus" is known only from the Indian Peninsula. At the time it was alive, the Indian landmass had recently separated from the rest of Gondwana and was moving north. While "Rajasaurus" had evolved along its own direction, it was still similar to other abelisaurids such as "Majungasaurus" from Madagascar and "Carnotaurus" from South America; these animals descended from a common lineage.

"Rajasaurus" has been found in the Lameta Formation. This rock unit represents a forested setting of rivers and lakes that formed between episodes of volcanism. The volcanic rocks are now known as the Deccan Traps. Rajasaur and sauropod fossils are known from river and lake deposits that were quickly buried by Deccan volcanic flows. Other dinosaurs from the Lameta Formation include the noasaurid "Laevisuchus", abelisaurids "Indosaurus" and "Indosuchus", and the titanosaurian sauropods "Jainosaurus", "Titanosaurus", and "Isisaurus".

Coprolites have been recorded in the Lameta Formation, and the presence of fungi in coprolites indicates that leaves were eaten by the dinosaurs which lived in a tropical or subtropical climate. Another scientific study of similarities in egg taxa suggested close phyletic relationships that supports the existence of a terrestrial connection between dinosaurian fauna in India and Europe during the Cretaceous, and between two Gondwanan areas, Patagonia and India.

સંશોધનનો ઇતીહાસ
વિવરણ
સાંસ્કુર્તીક મહત્વ
Palaeobiology