| 四川盆地蛇颈龙一新属 |
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| 引用本文： | 张奕宏.四川盆地蛇颈龙一新属[J].古脊椎动物学报,1985(3). |
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| 作者姓名： | 张奕宏 |
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| 作者单位： | 四川省重庆自然博物馆 |
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| 摘 要： | 本文记述了四川盆地蛇颈龙—新属种——澄江渝州上龙 (Yuzhoupliosaurus cheagjiangensis gen. et sp. nov.) 并依据形态特征将它归于拉玛劳龙科 (Rhomaleosauridae).
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| 关 键 词： | 四川盆地 新田沟组 蛇颈龙类 |
A NEW PLESIOSAUR FROM MIDDLE JURASSIC OF SICHUAN BASIN |
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| Zhang Yihong Chongqing Museum of Natural History.A NEW PLESIOSAUR FROM MIDDLE JURASSIC OF SICHUAN BASIN[J].Vertebrata Palasiatica,1985(3). |
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| Authors: | Zhang Yihong Chongqing Museum of Natural History |
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| Institution: | Zhang Yihong Chongqing Museum of Natural History |
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| Abstract: | A new Plesivsaur (Yuzhoupliosaurus chengjiangensis gen. et sp. nov.) obtained from Chengjiang Commune of Chongqing is described in the present paper. Type specimen A fragmentary maildible; 18 vertebrae including 10 cervieals; 4 dorsals and 4 candals; A left scapula and a coracoid, a right clavicle; A right femur and a right tibia. No. CV. 00218 Diagnosis Medium size, about 4 metres in length. Mandible short and wide; Mandible with 5 pairs of large teeth, approximate 23-24 teeth in each ramus. Teeth circular shaped in cross-section, ornamented with fine elosely-pached longittudinal striation on enamel of crown. Cevvical vertehrae high and short. Ventral side of each vertebra ornamented with a pronotmeed longitudinal ridge. Cervical rib of anterior vertehrae with dvuble heads, while those of posterior ones single. Scapula triradiate in shape, dorsal,process of it lonng and fairly narrow, directing towards posterior-laterally. Coracoid elongated antero-posteriorly, its Postero-lateral angle less produced. Clavicles well developed. The age of Yuzhoupliosaurus chengjiangensis is suggested to be of Middle Jurassic. |
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| Keywords: | Sichuan Basin Xintiangou Formatign Plesiosaur |
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