"We have found the bones of herbivorous dinosaurs and the jaw of a crocodile during excavations at neighbouring Dhar district," Vishal Verma, head of the researchers group - Mangal Panchaytan Parishad - told PTI.
A close look at the crocodile`s jaw indicates that it was 15-ft long, he said.
Verma said their organisation, which was conducting researches in the region for the last couple of years, has during excavation found dinosaur eggs and bones in the past.
Madhya Pradesh government already has plans to set up a dinosaur fossil park in Dhar district.
According to Verma, the Narmada valley in western Madhya Pradesh had stood a witness to volcanic eruptions and other activities, which had brought tremendous changes in its environs.
Studies also suggest that the area was once was an ocean, which disappeared later, he added.