Acta Scientiarum Naturalium Universitatis Pekinensis ›› 2017, Vol. 53 ›› Issue (1): 81-90.doi: 10.13209/j.0479-8023.2016.099

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The First Discovery of Deinonychosaurian Tracks from Lower Cretaceous of Chabu, Otog Qi, Inner Mongolia and Its Significance

Baopeng WANG1,2, Jianjun LI1,(), Zhiqiang BAI2, Jieqiong CHANG2, Yongqiang ZHANG3   

  1. 1. Beijing Museum of Natural History, Beijing 100050
    2. School of Earth and Space Sciences, Peking University, Beijing 100871
    3. Otog Comprehensive Geological Museum, Ordos 016100

  • Received:2015-09-17 Revised:2015-12-07 Published:2017-01-20

Abstract:

Thousands of footprint fossils have been discovered in the Lower Cretaceous of Chabu area in Otog Qi, Ordos city, Inner Mongolia, including theropod, sauropod and bird footprints as well. In 2014, a detailed survey was carried out around the Otog Field Museum of Geological Vestige (Tracksite: 8A and 8B) in Chabu area. Two functionally didactyl tracks attributed to deinonychosaurian theropods were firstly found. These two-toed tracks are assigned to Dromaeosauripus according a number of features. Two other theropod fossil footprints (Asianopodus robustus and Grallator) were found together with the two-toed tracks, which reflected the living habits of deinonychosaurs. The global record of didactyl theropod tracks (Dromaeopodidae) was enlarged by this discovery. It also helps to reveal the paleoecology of Chabu area and compare strata with other area.

Key words: dinosaur tracks, theropod, deinonychosauria, Chabu area, Early Cretaceous

CLC Number: 

  • P52