Tharosaurus indicus Bajpai et al., 2023 (new genus and species)
(Neck vertebrae of Tharosaurus indicus [scale bars = 50 mm], from Bajpai et al., 2023)
Meaning of name: Tharosaurus = Thar Desert lizard [in Greek]; indicus = from India
Age: Middle Jurassic (Bathonian)
Where found: Jaisalmer Formation, Rajasthan, India
How much is known: Several partial vertebrae and a rib.
Notes: Tharosaurus was a sauropod. Although it is known from fragmentary remains, the describers of Tharosaurus found it to be a diplodocoid sauropod in their analyses, which would make it a member of the lineage more closely related to Diplodocus and Apatosaurus than to Brachiosaurus. More specifically, it may have been a dicraeosaurid, a group of diplodocoids probably best known for including the bizarre Amargasaurus and Bajadasaurus from the Cretaceous of South America. If this classification turns out to be accurate, Tharosaurus would be the oldest known diplodocoid, and may suggest that the Indian subcontinent was an important region for their early evolution.
Reference: Bajpai, S., D. Datta, P. Pandey, T. Ghosh, K. Kumar, and D. Bhattacharya. 2023. Fossils of the oldest diplodocoid dinosaur suggest India was a major centre for neosauropod radiation. Scientific Reports 13: 12680. doi: 10.1038/s41598-023-39759-2