| A reassessment of Kelmayisaurus petrolicus, a large theropod dinosaur from the Early Cretaceous of China | |
| Brusatte, Stephen L.1,2; Benson, Roger B. J.3,4; Xu, Xing5; sbrusatte@amnh.org | |
| 2012-03-01 | |
| 发表期刊 | ACTA PALAEONTOLOGICA POLONICA
 |
| ISSN | 0567-7920 |
| 卷号 | 57期号:1页码:65-72 |
| 文章类型 | Article |
| 摘要 | The Early Cretaceous fossil record of large-bodied theropods from Asia is poor, hindering comparison of Asian predatory dinosaur faunas with those from other continents. One of the few large Asian theropod specimens from this interval is a partial skull (maxilla and dentary) from the Lianmugin Formation (?Valanginian-Albian), the holotype of Kelmayisaurus petrolicus. Most authors have either considered this specimen as an indeterminate basal tetanuran or a nomen dubium. We redescribe K. petrolicus and note that it possesses a single autapomorphy (a deep accessory groove on the lateral surface of the anterior dentary), as well as a unique combination of characters that differentiates it from other theropods, affirming its validity. A phylogenetic analysis recovers K. petrolicus as a basal carcharodontosaurid, which is supported by various features: very deep interdental plates (a carcharodontosaurid synapomorphy), fused interdental plates (present in carchardontosaurids and a limited number of other theropods), and the absence of diagnostic features of other clades of large-bodied theropods such as abelisaurids, megalosauroids, and coelurosaurs. As such, Kelmayisaurus is the second known carcharodontosaurid from Asia, and further evidence that this clade represented a global radiation of large-bodied predators during the Early-mid Cretaceous. |
| 关键词 | Dinosauria Theropoda Carcharodontosauridae Anatomy Cretaceous China |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| URL | 查看原文 |
| 关键词[WOS] | MEGALOSAURUS-BUCKLANDII DINOSAURIA ; REPUBLIC-OF-CHINA ; CARCHARODONTOSAURID DINOSAURIA ; PHYLOGENY ; PATAGONIA ; EVOLUTION ; XINJIANG ; ANATOMY ; ASIA ; TYRANNOSAURIDS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS研究方向 | Paleontology |
| WOS类目 | Paleontology |
| WOS记录号 | WOS:000302518800005 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.205/handle/311034/4317 |
| 专题 | 古低等脊椎动物研究室 |
| 通讯作者 | sbrusatte@amnh.org |
| 作者单位 | 1.Amer Museum Nat Hist, Div Paleontol, New York, NY 10024 USA 2.Columbia Univ, Dept Earth & Environm Sci, New York, NY USA 3.UCL, Dept Earth Sci, London WC1E 6BT, England 4.Univ Cambridge, Dept Earth Sci, Cambridge CB2 3EQ, England 5.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R China |
| 推荐引用方式 GB/T 7714 | Brusatte, Stephen L.,Benson, Roger B. J.,Xu, Xing,et al. A reassessment of Kelmayisaurus petrolicus, a large theropod dinosaur from the Early Cretaceous of China[J]. ACTA PALAEONTOLOGICA POLONICA,2012,57(1):65-72. |
| APA | Brusatte, Stephen L.,Benson, Roger B. J.,Xu, Xing,&sbrusatte@amnh.org.(2012).A reassessment of Kelmayisaurus petrolicus, a large theropod dinosaur from the Early Cretaceous of China.ACTA PALAEONTOLOGICA POLONICA,57(1),65-72. |
| MLA | Brusatte, Stephen L.,et al."A reassessment of Kelmayisaurus petrolicus, a large theropod dinosaur from the Early Cretaceous of China".ACTA PALAEONTOLOGICA POLONICA 57.1(2012):65-72. |
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