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- W2030244292 abstract "Troodontid dinosaurs share a close ancestry with birds and were distributed widely across Laurasia during the Cretaceous. Hundreds of occurrences of troodontid bones, and their highly distinctive teeth, are known from North America, Europe and Asia. Thus far, however, they remain unknown from Gondwanan landmasses. Here we report the discovery of a troodontid tooth from the uppermost Cretaceous Kallamedu Formation in the Cauvery Basin of South India. This is the first Gondwanan record for troodontids, extending their geographic range by nearly 10,000 km, and representing the first confirmed non-avian tetanuran dinosaur from the Indian subcontinent. This small-bodied maniraptoran dinosaur is an unexpected and distinctly ‘Laurasian’ component of an otherwise typical ‘Gondwanan’ tetrapod assemblage, including notosuchian crocodiles, abelisauroid dinosaurs and gondwanathere mammals. This discovery raises the question of whether troodontids dispersed to India from Laurasia in the Late Cretaceous, or whether a broader Gondwanan distribution of troodontids remains to be discovered. Troodontid dinosaurs share a close ancestry with birds and were distributed widely across the northern hemisphere before the extinction of non-avian dinosaurs. Goswami et al. report the discovery in South India of the first Gondwanan troodontid, extending their geographic range by nearly 10,000 km." @default.
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- W2030244292 date "2013-04-16" @default.
- W2030244292 modified "2023-10-16" @default.
- W2030244292 title "A troodontid dinosaur from the latest Cretaceous of India" @default.
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- W2030244292 doi "https://doi.org/10.1038/ncomms2716" @default.
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