| 四川自贡地区侏罗纪恐龙动物群组合特征 |
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| 引用本文： | 彭光照.四川自贡地区侏罗纪恐龙动物群组合特征[J].地质学刊,2009,33(2):113-123. |
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| 作者姓名： | 彭光照 |
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| 作者单位： | 自贡恐龙博物馆,四川自贡,643013
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| 基金项目： | 自贡恐龙博物馆馆长基金 |
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| 摘 要： | 自贡地区涵盖侏罗纪3个不同时期的恐龙动物群组合。早侏罗世是恐龙动物群的萌发阶段，以原蜥脚类和原始蜥脚类恐龙共存为主要特征，属禄丰蜥龙动物群范畴；中侏罗世蜀龙动物群具有过渡性质，代表恐龙动物群的繁荣阶段，特点是原蜥脚类绝迹，原始的蜥脚类和进步的蜥脚类共同成为动物群的主要成员，并开始出现一些特化的蜥脚类，肉食龙类和鸟脚类成为动物群的重要成员，剑龙类开始出现；晚侏罗世马门溪龙动物群代表恐龙动物群发展的鼎盛阶段，特点是成渝龟类被蛇颈龟类所取代，原始的蜥脚类已消亡，特化的长颈型的马门溪龙类为主要成员，肉食龙类、鸟脚类和剑龙类向大型化发展。自贡地区侏罗纪恐龙动物群的兴衰和更替与四川盆地古地理环境和古气候的变迁密切相关。
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| 关 键 词： | 恐龙动物群 组合 侏罗纪 四川自贡 |
Assemblage characters of Jurassic dinosaurian fauna in Zigong of Sichuan |
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| PENG Guang-zhao.Assemblage characters of Jurassic dinosaurian fauna in Zigong of Sichuan[J].Jiangsu Geology,2009,33(2):113-123. |
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| Authors: | PENG Guang-zhao |
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| Institution: | PENG Guang-zhao( Zigong Dinosaur Museum, Zigong 643013, Sichuan ) |
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| Abstract: | As a famous area of abundant fossil dinosaur＇s emergence ,34 genera and 46 species of Jurassic vertebrates have been discovered and recognized so far in Zigong City of Sichuan Province. There existed three assemblages of dinosaurian fauna with differ phases in Zigong. First of all, the budding period with a characteristic of coexistence of prosauropods and original sauropods,belongs to Lufengosaurus-Fauna during early Jurassic. Secondly, Shunosanru-fauna with transitional characters became a figure of the flourishing period. It was characteristic of disappeared prosauropods,coexisted both original and advanced sauropods as fauna member,appeared some specialized sauropods and important fauna members including carnosaurs and ornithopods, as well as emerged stegosaurs during middle Jurassic. Thirdly, Mamenchisaurus-Fauna became an indication of a period of great prosperity. It was characteristic of the preponderant plesiochelyiris,disappeared original sauropods ,specialized long-necked manmenchisaurids as a main member,good-sized earnosaurs ,ornithopods and stegosaurs during late Jurassic Period. It is concluded that the flourishing and evolution of the Jurassic dinosaurian fauna in Zigong area was closely related with the change of paleo-geographical environment and paleo climate in Sichuan basin. |
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| Keywords: | Dinosaurian fauna Assemblage Jurassic Period Zigong Sichuan |
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