Chirotherium Trackways from the Middle Triassic of Guizhou, China | |
Lida Xing; Hendrik Klein; Martin G. Lockley; Jianjun Li; Jianping Zhang; Masaki Matsukawa; Jiafei Xiao | |
2013 | |
发表期刊 | Ichnos:an International Journal of Plant and Animal |
卷号 | 20期号:2页码:99-107 |
摘要 | Triassic tetrapod footprints from China are less well known than those from the Jurassic and Cretaceous. Archosaurian trackways of the ichnogenus Chirotherium were found in the Middle Triassic Guanling Formation in Zhenfeng County (Guizhou Province) at the southwestern edge of the Yangtze plate in the early 1960s but were not correctly identified and adequately described until 40 years later. Here we give a detailed re-description and review of the trackways, which are known from two localities near the villages of Niuchang and Longchang. They occur on the bedding surface of a mud-cracked argillaceous dolostone deposited in a near-shore, shallow-water environment. Their morphology and general trackway pattern indicate that they pertain to the ichnospecies Chirotherium barthii, well known from Middle Triassic track surfaces of Europe, North and South America, and northern Africa. A peculiarity of the trackways from China are the low pace angulation and stride length, reflecting slow-moving trackmakers, which were basal crown-group archosaurs, possibly early representatives of the dinosaur-bird line or, alternatively, stem-group crocodylians. These tracks constitute the only chirotheriid record known from Asia thus far and indicate a Pangea-wide distribution for this ichnotaxon. Biostratigraphically, assemblages with C. barthii are characteristic of the early Anisian, an age assignment already supported for the Guanling Formation based on conodont and bivalve biostratigraphy. In contrast, however, radiometric data from an interlayered ash bed indicate a Ladinian age. |
关键词 | Chirotherium Barthii middle Triassic basal Archosaurs guanling Formation |
收录类别 | SCI |
语种 | 英语 |
文献类型 | 期刊论文 |
条目标识符 | http://ir.gyig.ac.cn/handle/42920512-1/11099 |
专题 | 矿床地球化学国家重点实验室 |
作者单位 | 1.School of the Earth Sciences and Resources , China University of Geosciences , Beijing , China 2.Department of Biological Sciences , University of Alberta , Edmonton , Alberta , Canada 3.Saurierwelt Paläontologisches Museum , Neumarkt , Germany 4.Dinosaur Tracks Museum , University of Colorado Denver , Denver , CO , USA 5.Beijing Museum of Natural History , Beijing , China 6.Department of Environmental Sciences , Tokyo Gakugei University , Koganei , Tokyo , Japan 7.State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry , Chinese Academy of Science , Guiyang , China |
推荐引用方式 GB/T 7714 | Lida Xing;Hendrik Klein;Martin G. Lockley;Jianjun Li;Jianping Zhang;Masaki Matsukawa;Jiafei Xiao. Chirotherium Trackways from the Middle Triassic of Guizhou, China[J]. Ichnos:an International Journal of Plant and Animal,2013,20(2):99-107. |
APA | Lida Xing;Hendrik Klein;Martin G. Lockley;Jianjun Li;Jianping Zhang;Masaki Matsukawa;Jiafei Xiao.(2013).Chirotherium Trackways from the Middle Triassic of Guizhou, China.Ichnos:an International Journal of Plant and Animal,20(2),99-107. |
MLA | Lida Xing;Hendrik Klein;Martin G. Lockley;Jianjun Li;Jianping Zhang;Masaki Matsukawa;Jiafei Xiao."Chirotherium Trackways from the Middle Triassic of Guizhou, China".Ichnos:an International Journal of Plant and Animal 20.2(2013):99-107. |
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