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首页> 外文期刊>Cretaceous Research >Dinosaur tracks from the Jurassic-Cretaceous boundary Tuchengzi Formation (Hebei Province, China) used as building stones in the Chengde imperial summer resort: Age, ichnology, and history
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Dinosaur tracks from the Jurassic-Cretaceous boundary Tuchengzi Formation (Hebei Province, China) used as building stones in the Chengde imperial summer resort: Age, ichnology, and history

机译：来自侏罗纪 - 白垩纪边界的恐龙轨道Tuchengzi组（河北省，中国）用作成都帝国夏季度假村的建筑石：年龄，Ichnnology和历史

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Slabs with tetrapod tracks from the Madigou Village quarry in the Tuchengzi Formation have famously been used as building stones at the imperial summer resort locality, also referred to in the ichnological literature as the "Chengde Summer Palace." The Jurassic-Cretaceous boundary Tuchengzi Formation has elsewhere in the region yielded differently composed ichnofaunas with non-avian and avian theropod and sauropod tracks. The Madigou assemblage is remarkable because it shows the co-occurrence of abundant and diverse non-avian and avian theropod tracks. The non-avian theropod tracks are mostly Grallator- and Eubrontes-like with a few that registered faint hallux traces. A small number of didactyl deinonychosaurian tracks were recognized which we here label as Velociraptorichnus isp. The avian theropod tracks can tentatively be referred to Aquatilavipes and Koreanaornis, with wide digit divarications. Growing geochronological and biostratigraphic evidence suggests that these are among the oldest known bird tracks, similar in age to Pullornipes, also from the Tuchengzi Formation in northeastern China and dating close to the Tithonian-Berriasian boundary. Theropod tracks are dominating, even if an isolated possible sauropod track and some questionable tridactyl imprints that could either represent theropods or ornithopods, may indicate the presence of further dinosaur groups. The Tuchengzi ichnofauna is important because of the stratigraphic age close to the famous Jehol Biota. (C) 2019 Elsevier Ltd. All rights reserved.
机译：来自朱沟岛山脉的Tetrapod轨道的板坯在图城子形成中的Quarry赛道着名着名被用作帝国夏季度假村地区的建筑石头，也称在IChnological文学中作为“成都颐和园”。侏罗纪 - 白垩纪边界图城子形成在该地区的其他地方产生不同地组成的ICHNOFaunas，具有非禽和禽流孔和Sauropod轨道。 Madigou汇编是显着的，因为它显示了丰富和多样化的非禽和禽流表轨道的共同发生。非鸟的Theropod轨道大多是格拉特尔和传统的轨迹，其中一些注册了淡淡的拇影迹线。少数DidActyl Deinonychosaurian轨道被认识到，我们在这里标记为Velociraptorichnus ISP。禽道轨道轨道可以暂时提到水上浪潮和Koreananors，具有宽的数字。成长的地形学和生物数据学证据表明，这些是最古老的鸟类轨道，在普拉诺斯队的年龄相似，也来自中国东北部的图城子形成，并靠近泰特尼亚 - Berriasian边界。 Theropod轨道是主导的，即使孤立的可能的Sauropod轨道和可以代表其ornithods或ornithopods的一些可疑的曲线曲线印记，也可以表明存在进一步的恐龙组。 Tuchengzi Ichnofauna很重要，因为着名的Jehol Biota附近的地层年龄很重要。 （c）2019年elestvier有限公司保留所有权利。

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