KMS Institute of Vertebrate Paleontology and Paleoanthropology
| The skull of Yunnanosaurus huangi young, 1942 (Dinosauria : Prosauropoda) from the Lower Lufeng Formation (Lower Jurassic) of Yunnan, China | |
Barrett, Paul M.; Upchurch, P.; Zhou, X.-D.; Wang, X.-L. ; Barrett, PM (reprint author), Nat Hist Museum, Dept Palaeontol, Cromwell Rd, London SW7 5BD, England.
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| 2007-06-01 | |
| 发表期刊 | ZOOLOGICAL JOURNAL OF THE LINNEAN SOCIETY
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| ISSN | 0024-4082 |
| 卷号 | 150期号:2页码:319-341 |
| 文章类型 | Article |
| 摘要 | The Lower Lufeng Formation (Lower Jurassic: ?Hettangian-?Sinemurian) of Yunnan Province, China, has yielded an important and diverse fauna of terrestrial vertebrates that is dominated by early sauropodomorph dinosaurs (prosauropods and basal sauropods). Nevertheless, few of these animals have been studied in detail, undermining their potential significance in understanding sauropodomorph phylogeny, palaeobiology, and palaeoecology. Here, we present a detailed re-description of the cranial osteology of Yunnanosaurus huangi Young, 1942 and propose an emended diagnosis for this taxon on the basis of numerous autapomorphic characters (including an expanded internarial bar, unusual midline cranial bosses, and the possession of elongate maxillary tooth crowns lacking marginal serrations). Incorporation of these novel anatomical data into existing phylogenetic analyses of sauropodomorph interrelationships substantially affects the resolution, length, and topologies of the trees recovered. Although the phylogenetic position of Yunnanosaurus remains labile, these new analyses undermine previous suggestions that the former was the sister taxon of the southern African prosauropod Massospondylus. Several features of the skull of Yunnanosaurus (small external nares, cranial bosses, tooth crown morphology, and the lack of maxillary foramina) indicate that the palaeobiology of Yunnanosaurus may have been rather different from that of other prosauropods and basal sauropods, although more detailed functional studies and better material are needed to confirm this suggestion. (c) 2007 Natural History Museum, London. Journal compilation (c) 2007 The Linnean Society of London, Zoological Journal of the Linnean Society, 2007, 150, 319-341.; The Lower Lufeng Formation (Lower Jurassic: ?Hettangian-?Sinemurian) of Yunnan Province, China, has yielded an important and diverse fauna of terrestrial vertebrates that is dominated by early sauropodomorph dinosaurs (prosauropods and basal sauropods). Nevertheless, few of these animals have been studied in detail, undermining their potential significance in understanding sauropodomorph phylogeny, palaeobiology, and palaeoecology. Here, we present a detailed re-description of the cranial osteology of Yunnanosaurus huangi Young, 1942 and propose an emended diagnosis for this taxon on the basis of numerous autapomorphic characters (including an expanded internarial bar, unusual midline cranial bosses, and the possession of elongate maxillary tooth crowns lacking marginal serrations). Incorporation of these novel anatomical data into existing phylogenetic analyses of sauropodomorph interrelationships substantially affects the resolution, length, and topologies of the trees recovered. Although the phylogenetic position of Yunnanosaurus remains labile, these new analyses undermine previous suggestions that the former was the sister taxon of the southern African prosauropod Massospondylus. Several features of the skull of Yunnanosaurus (small external nares, cranial bosses, tooth crown morphology, and the lack of maxillary foramina) indicate that the palaeobiology of Yunnanosaurus may have been rather different from that of other prosauropods and basal sauropods, although more detailed functional studies and better material are needed to confirm this suggestion. (c) 2007 Natural History Museum, London. Journal compilation (c) 2007 The Linnean Society of London, Zoological Journal of the Linnean Society, 2007, 150, 319-341. |
| 关键词 | Basal Sauropodomorpha Cranial Morphology Palaeobiology Phylogenetics |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| URL | 查看原文 |
| 关键词[WOS] | REPUBLIC-OF-CHINA ; SAUROPOD DINOSAUR ; EVOLUTION ; ORIGIN ; BRAZIL |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS研究方向 | Zoology |
| WOS类目 | Zoology |
| WOS记录号 | WOS:000247206500003 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.205/handle/311034/3357 |
| 专题 | 中科院古脊椎所（2000年以后） 古低等脊椎动物研究室 |
| 通讯作者 | Barrett, PM (reprint author), Nat Hist Museum, Dept Palaeontol, Cromwell Rd, London SW7 5BD, England. |
| 作者单位 | 1.Nat Hist Museum, Dept Palaeontol, London SW7 5BD, England 2.UCL, Dept Earth Sci, London WC1E 6BT, England 3.Nanjing Geol Museum, Nanjing 210018, Peoples R China 4.Acad Sinica, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R China |
| 推荐引用方式 GB/T 7714 | Barrett, Paul M.,Upchurch, P.,Zhou, X.-D.,et al. The skull of Yunnanosaurus huangi young, 1942 (Dinosauria : Prosauropoda) from the Lower Lufeng Formation (Lower Jurassic) of Yunnan, China[J]. ZOOLOGICAL JOURNAL OF THE LINNEAN SOCIETY,2007,150(2):319-341. |
| APA | Barrett, Paul M.,Upchurch, P.,Zhou, X.-D.,Wang, X.-L.,&Barrett, PM .(2007).The skull of Yunnanosaurus huangi young, 1942 (Dinosauria : Prosauropoda) from the Lower Lufeng Formation (Lower Jurassic) of Yunnan, China.ZOOLOGICAL JOURNAL OF THE LINNEAN SOCIETY,150(2),319-341. |
| MLA | Barrett, Paul M.,et al."The skull of Yunnanosaurus huangi young, 1942 (Dinosauria : Prosauropoda) from the Lower Lufeng Formation (Lower Jurassic) of Yunnan, China".ZOOLOGICAL JOURNAL OF THE LINNEAN SOCIETY 150.2(2007):319-341. |
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