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Photograph of the natural cast of the pes print of Pteraichnus wuerhoensis (IVPP V 26281.2 58PR) from Huangyangquan Reservoir tracksite 1, Xinjiang, China, Lower Cretaceous, Shengjinkou Formation. Reproduced from Li et al.40 (A)-(C) Are mirrored for comparative consistency. Abbreviations: DIP, distal interphalangeal footpad; MTP, metatarsophalangeal footpad; PIP, proximal interphalangeal footpad. Range in elevation for height maps presented in millimeters. Scale bars, 20 mm. SeeData S1for more details.

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