Dinosaur track sites and palaeogeography of the late Early Cretaceous in Shuhe Rifting Zone of Shandong Province
Kuang Hongwei1 Liu Yongqing1 Wu Qingzi2 Cheng Guangsuo3 Xu Kemin4 Liu Hai1,5 Peng Nan1,6 Xu Huan1 Chen Jun1,3,6 Wang Baohong1,7 Xu Jialin1,7 Wang Mingwei1,7 Zhang Peng1,6
1 Institute of Geology，Chinese Academy of Geological Sciences，Beijing 100037 2 The No.8 Exploration Institute of Geology and Mineral Resources，Rizhao 276800，Shandong 3 Shandong Institute and Laboratory of Geological Sciences，Jinan 250000，Shandong 4 Shandong Institute of Geology Survey, Jinan 250000，Shandong 5 School of Geophysics and Resources of Yangtze University，Jingzhou 434023，Hubei 6 School of the Earth Sciences and Natural Resources，China University of Geosciences(Beijing)，Beijing 100083 7 School of Geosciences of Yangtze University，Jingzhou 434023，Hubei
Abstract：Eight dinosaur track sites in the upper Lower Cretaceous(Dasheng Group)were found along the 300 km- long northeast-trending Shuhe Rifting Zone in the south-central Shandong Province according to the recent field investigations. Five track sites among them were newly discovered. Especially，the huge sauropod footprints with the diameter about 1.0m in Tancheng，may be the second to the biggest sauropod footprints from Yanguoxia，Gansu，China.The footprints were marked in the Tianjialou Formation of Dasheng Group during the maximum flooding period，about 110-100Ma(Aptian-Albian).The footprints were mostly concave, mainly from sauropod，secondly from theropod and ornithopod.Most dinosaurs meandered slowly. Generally, footprints existed in the fine sandstone and siltstone，always accompanied by ripples，mud cracks and rain prints.The in-situ preservation of footprints and the sedimentary characteristics showed that dinosaurs lived in the lake shore environments where would be the better preservation sites for footprints.The climate at the late Early Cretaceous in this area were from warm humid to hot arid. Comparing with other preservation environment in the same period，it proved that dinosaur faunas had distributed in an even wider area with similar palaeogeography in the Early Cretaceous.
Kuang Hongwei,Liu Yongqing,Wu Qingzi et al. Dinosaur track sites and palaeogeography of the late Early Cretaceous in Shuhe Rifting Zone of Shandong Province[J]. JOPC, 2013, 15(4): 435-453.
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