In a rare discovery, teeth of new species of hybodont shark of Jurassic age have been reported for the first time from Jaisalmer by a team of officers from the Geological Survey of India (GSI), Western Region, Jaipur.
- This finding has been published in Historical Biology, a Journal of Palaeontology of International repute, in its August, 2021, 4th issue.
- Hybodont sharks have been reported for the first time from the Jurassic rocks (approximately, between 160 and 168 million-years-old) of the Jaisalmer region of Rajasthan.
- 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.
- However, hybodont sharks started to decline in marine environments from the Middle Jurassic onwards until they formed a relatively minor component of open-marine shark assemblages.
- Hybodonts finally became extinct at the end of the Cretaceous time 65 million years ago.
- Significantly, the newly discovered crushing teeth from Jaisalmer represent a new species named by the research team as Strophodusjaisalmerensis.
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