Fossils of the oldest diplodocoid dinosaur suggest India was a major centre for neosauropod radiation.

Autor: Bajpai S; Department of Earth Sciences, Indian Institute of Technology, Roorkee, Uttarakhand, 247667, India. sunil.bajpai@es.iitr.ac.in., Datta D; Department of Earth Sciences, Indian Institute of Technology, Roorkee, Uttarakhand, 247667, India. debajitdatta.pd@es.iitr.ac.in., Pandey P; Geological Survey of India, Raipur, Chhattisgarh, 492010, India., Ghosh T; Department of Earth Sciences, Indian Institute of Technology, Roorkee, Uttarakhand, 247667, India.; Geological Survey of India, Jaipur, Rajasthan, 302004, India., Kumar K; Geological Survey of India, Jaipur, Rajasthan, 302004, India., Bhattacharya D; Central Head Quarters, Geological Survey of India, Kolkata, West Bengal, 700091, India.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2023 Aug 04; Vol. 13 (1), pp. 12680. Date of Electronic Publication: 2023 Aug 04.
DOI: 10.1038/s41598-023-39759-2
Abstrakt: The Early Jurassic and Cretaceous deposits of India are known for their diverse sauropod fauna, while little is known from the Middle and Late Jurassic. Here we report the first ever remains of a dicraeosaurid sauropod from India, Tharosaurus indicus gen. et sp. nov., from the Middle Jurassic (early-middle Bathonian) strata of Jaisalmer Basin, western India. Known from elements of the axial skeleton, the new taxon is phylogenetically among the earlier-diverging dicraeosaurids, and its stratigraphic age makes it the earliest known diplodocoid globally. Palaeobiogeographic considerations of Tharosaurus, seen in conjunction with the other Indian Jurassic sauropods, suggest that the new Indian taxon is a relic of a lineage that originated in India and underwent rapid dispersal across the rest of Pangaea. Here we emphasize the importance of Gondwanan India in tracing the origin and early evolutionary history of neosauropod dinosaurs.
(© 2023. Springer Nature Limited.)
Databáze: MEDLINE
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