| A New Somphospondylan Sauropod (Dinosauria, Titanosauriformes) from the Late Cretaceous of Ganzhou, Jiangxi Province of Southern China |
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| 作者姓名： | Lü Junchang YI Laiping ZHONG Hui and WEI Xuefang |
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| 作者单位： | 1 Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China
2 Ganzhou Museum of Natural History, Ganzhou 341000 Jiangxi, China |
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| 基金项目： | This study was supported by the Natural Science Foundation of China (41272022, 90914003) and Tohoku University Museum, Tohoku University, Japan to Lü JC. |
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| 摘 要： | A new somphospondylan sauropod (Dinosauria, Titanosauriformes): Gannansaurus sinensis gen. et sp. nov. from the Late Cretaceous Nanxiong Formation of Ganzhou Basin, Jiangxi Province of southern China is erected based on one nearly complete dorsal vertebra and a mid-caudal vertebra. It is characterized by two centroprezygapophyseal lamina fossae; large, square-shaped concavity formed by centroprezygapophyseal lamina and dorsal margin of the centrum; large infraparapophyseal fossa; three openings present within the large lateral concavity, which occupy 65% length of the centrum; the posterior centroparapophyseal lamina (PCPL) and the anterior centroparapophyseal lamina (ACPL) weakly developed; the posterior centrodiapophyseal lamina (PCDL) separated by an infradiapophyseal fossa into two branches dorsally; parapophyseal and diapophyseal laminae cross to form "K" configuration. It shares some characters with the Early Cretaceous form-Euhelopus, indicating that it is more closely related to Euhelopus rather than to other titanosauriform sauropods. This means Gannansaurus may have a close phylogenetic relationship with Euhelopus.
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| 关 键 词： | Ganzhou Jiangxi Province Late Cretaceous Gannansaurus Somphospondyli Titanosauriformes |
| 收稿时间： | 2012/9/19 0:00:00 |
| 修稿时间： | 2013/1/14 0:00:00 |
A New Somphospondylan Sauropod (Dinosauria, Titanosauriformes) from the Late Cretaceous of Ganzhou, Jiangxi Province of Southern China |
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| Authors: | ,
L Junchang
,
YI Laiping
,
ZHONG Hui
,
WEI Xuefang |
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| Institution: | 1. Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China
2. Ganzhou Museum of Natural History, Ganzhou 341000 Jiangxi, China |
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| Abstract: | A new somphospondylan sauropod (Dinosauria, Titanosauriformes): Gannansaurus sinensis gen. et sp. nov. from the Late Cretaceous Nanxiong Formation of Ganzhou Basin, Jiangxi Province of southern China is erected based on one nearly complete dorsal vertebra and a mid‐caudal vertebra. It is characterized by two centroprezygapophyseal lamina fossae; large, square‐shaped concavity formed by centroprezygapophyseal lamina and dorsal margin of the centrum; large infraparapophyseal fossa; three openings present within the large lateral concavity, which occupy 65% length of the centrum; the posterior centroparapophyseal lamina (PCPL) and the anterior centroparapophyseal lamina (ACPL) weakly developed; the posterior centrodiapophyseal lamina (PCDL) separated by an infradiapophyseal fossa into two branches dorsally; parapophyseal and diapophyseal laminae cross to form “K” configuration. It shares some characters with the Early Cretaceous form‐Euhelopus, indicating that it is more closely related to Euhelopus rather than to other titanosauriform sauropods. This means Gannansaurus may have a close phylogenetic relationship with Euhelopus. |
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| Keywords: | Ganzhou Jiangxi Province Late Cretaceous Gannansaurus Somphospondyli Titanosauriformes |
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