Two new dinosaur tracksites from the Lower Cretaceous Jiaguan Formation of Sichuan Basin,China: specific preservation and ichnotaxonomy |
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| Authors: | Lida Xing Martin G Lockley Anthony Romilio Hendrik Klein Zhongdong Li |
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| Institution: | 1. State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Beijing, China;2. School of the Earth Sciences and Resources, China University of Geosciences, Beijing, China;3. Dinosaur Trackers Research Group, University of Colorado Denver, Denver, CO, USA;4. School of Biological Sciences, The University of Queensland, Brisbane, Australia;5. Saurierwelt Pal?ontologisches Museum, Neumarkt, Germany;6. Geophysical Prospecting Team of Sichuan Geology and Mineral Exploration and Development Bureau, Chengdu, China |
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| Abstract: | Two new dinosaur tracksites are reported from the Lower Cretaceous Jiaguan Formation in the Sichuan Basin, Qijiang District of Chongqing. These are the Gaoqing-Yongsheng and the Huibu tracksites, which represent the 13th and 14th reports from this formation. The Gaoqing-Yongsheng tracksite reveals the trackway of a large biped (ornithopod) in association with isolated sauropod tracks and large indeterminate undertracks with radial cracks. These features are preserved as natural casts with pebble infillings in a coarse, cross bedded and very thick bedded sandstone sequence. The Huibu tracksite reveals isolated theropod tracks and ornithopod tracks, the latter having a quadripartite, Caririchnium-like morphology, preserved in a thin bedded sandstone sequence with intercalated mudstone. |
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| Keywords: | Dinosaur tracks Theropod Sauropod Ornithopod Jiaguan Formation Lower Cretaceous |
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