In a rare discovery recently, teeth of new species of hybodont shark of the Jurassic age have been reported for the first time from Jaisalmer by a team of the Geological Survey of India (GSI).
Hybodonts, an extinct group of sharks, was a dominant group of fishes in both marine and fluvial environments during the Triassic and early Jurassic time.
They became extinct at the end of the Cretaceous time 65 million years ago.