Summary:
The finding of primitive whale fossil indicates the early evolution of the whale during Eocene time in Jaisalmer Basin.” and some marine mammals, such primitive whales and sirenian (sea cow) were evolved. At this time there were many birds, reptiles and mammals living in land as well as in the sea. At the same time in the sea, various types of fish (shark, ray etc.) In the Land, Perissodactyls (odd-toed ungulates) and artiodactyls (even-toed ungulates) were evolved during this time..