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[dinosaur] Ornithomimosaur remains from Lower Cretaceous Tugulu Group, Junggar Basin, Xinjiang, China



Ben Creisler
bcreisler@gmail.com

A new paper:

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Lida Xing, W. Scott Persons IV, ÂStephan Lautenschlager, Donghao Wang & Kecheng Niu (2020)
The first record of an ornithomimosaur from the Cretaceous Tugulu Group of the Junggar Basin, Xinjiang, China.
Cretaceous Research 104740 (advance online publication)
doi: https://doi.org/10.1016/j.cretres.2020.104740
https://www.sciencedirect.com/science/article/abs/pii/S0195667120304274



Here we report the discovery of a non-avian theropod manus claw and various closely associated caudal vertebrae from a Lower Cretaceous exposure of the Tugulu Group, in the Junggar Basin. The gross anatomy of the vertebrae indicate an ornithomimosaur affinity, and a morphometric analysis of the claw supports this diagnosis. As is consistent with the known morphology of basal ornithomimosaur manual unguals, the claw is strongly curved, relatively robust, and possesses a prominent distoventral flexor tubercle. The centrum of one caudal vertebra narrows noticeably anteroposteriorly, suggesting that it is from very near the terminus of the tail. This fragmentary material constitutes the first record of an ornithomimosaur known from the Junggar Basin.

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