A re-evaluation of Chinshakiangosaurus chunghoensis Ye vide Dong 1992 (Dinosauria, Sauropodomorpha): implications for cranial evolution in basal sauropod dinosaurs
文献类型：期刊论文
| 作者 | Upchurch, Paul; Barrett, Paul M.; Zhao Xijin; Xu Xing ; Upchurch, P (reprint author), UCL, Dept Earth Sci, Gower St, London WC1E 6BT, England.
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| 刊名 | GEOLOGICAL MAGAZINE
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| 出版日期 | 2007 |
| 卷号 | 144期号:2页码:247—262 |
| ISSN号 | 0016-7568 |
| 英文摘要 | Re-description of the left dentary of Chinshakiangosaurus chunghoensis reveals that it possesses an unusual combination of 'prosauropod' and 'sauropod' character states. Cladistic analysis places Chinshakiangosaurus as one of the most basal sauropods known currently. Mapping of dentary and dental characters onto the most parsimonious topologies yields insights into the sequence of acquisition of a number of feeding-related characters. For example, it seems that basal sauropodomorphs (traditional prosauropod taxa) possessed a fleshy cheek that attached to the mandible along a marked ridge, and that the same structure was present in the most basal sauropods. The early sauropod skull developed a lateral plate that reinforced the bases of the tooth crowns labially, and had wrinkled tooth enamel and a concavity on the mesial portion of the lingual part of each crown, while retaining a fleshy cheek and a relatively weak symphysis. More advanced sauropods (eusauropods) lost the cheek, perhaps in order to increase the gape of the jaws in response to a change in feeding style that involved collection of larger quantities of poor quality foliage. |
| URL标识 | 查看原文 |
| 公开日期 | 2013-11-27 |
| 源URL | [http://119.78.100.205/handle/311034/3380]  |
| 专题 | 古脊椎动物与古人类研究所_图书馆1 古脊椎动物与古人类研究所_古低等脊椎动物研究室 |
| 通讯作者 | Upchurch, P (reprint author), UCL, Dept Earth Sci, Gower St, London WC1E 6BT, England. |
| 推荐引用方式 GB/T 7714 | Upchurch, Paul,Barrett, Paul M.,Zhao Xijin,et al. A re-evaluation of Chinshakiangosaurus chunghoensis Ye vide Dong 1992 (Dinosauria, Sauropodomorpha): implications for cranial evolution in basal sauropod dinosaurs[J]. GEOLOGICAL MAGAZINE,2007,144(2):247—262. |
| APA | Upchurch, Paul,Barrett, Paul M.,Zhao Xijin,Xu Xing,&Upchurch, P .(2007).A re-evaluation of Chinshakiangosaurus chunghoensis Ye vide Dong 1992 (Dinosauria, Sauropodomorpha): implications for cranial evolution in basal sauropod dinosaurs.GEOLOGICAL MAGAZINE,144(2),247—262. |
| MLA | Upchurch, Paul,et al."A re-evaluation of Chinshakiangosaurus chunghoensis Ye vide Dong 1992 (Dinosauria, Sauropodomorpha): implications for cranial evolution in basal sauropod dinosaurs".GEOLOGICAL MAGAZINE 144.2(2007):247—262. |
入库方式： OAI收割
来源：古脊椎动物与古人类研究所
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