کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6448177 | 1642058 | 2016 | 20 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A theropod track assemblage including large deinonychosaur tracks from the Lower Cretaceous of Asia
ترجمه فارسی عنوان
مجموعه ای از مسیر تراوود شامل آهنگ های بزرگ دینونیچوسار از کرتاسه پایین آسیا
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موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
فسیل شناسی
چکیده انگلیسی
A total of more than 40 tridactyl and didactyl tracks were preserved as natural casts on four fallen blocks of sandstone representing the Lower Cretaceous Jiaguan Formation of Gulin County in southeastern Sichuan Province, China. While several trackways can be distinctly followed, others are isolated imprints only. All have been flattened by overburden pressures. Tridactyl tracks are present with three size-classes being <10Â cm, 10-20Â cm and >20Â cm in length. Morphologically they are similar to the ichnogenus Eubrontes, considering the relatively weak mesaxony. Eight of the tracks on one of the blocks are clearly didactyl and are here interpreted as representing large and medium sized dromaeosaurids. The largest track is about â¼30Â cm long and comparable in size to the type of Dromaeopodus (â¼28Â cm), from the Lower Cretaceous of Shandong Province, which was the largest dromaeosaurid track previously reported. This report adds new data to the growing number of dromaeosaurid tracksites reports from China, and from the Jiaguan Formation, suggesting that this theropod group had a preference for fluvial paleoenvironments.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cretaceous Research - Volume 65, October 2016, Pages 213-222
Journal: Cretaceous Research - Volume 65, October 2016, Pages 213-222
نویسندگان
Lida Xing, Martin G. Lockley, Hendrik Klein, Guangzhao Peng, Yong Ye, Shan Jiang, Jianping Zhang, W. Scott IV, Ting Xu,