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四川自贡大山铺蜀龙动物群简报I.剑龙

1982年 第20卷 第1期:83~87

发表日期:2009-04-01李志恒来源:放大 缩小

编辑:董枝明 唐治路 周世武

摘要:A middle Jurassic assemblage of dinosaurian fossil was found at Dashanpe in Zigong city, Sichuan Province, in winter in 1979 and 1980. It was named Shunosaurus fauna consisting of abundant sauropods, carnosaurs and stegosaurs etc. All of these specimens will deal with in a Memoir in a rather long time. A new genus and species of stegosaur, Huayangosaurus taibaii was established and described primely in this note.
   The main characters of the new form are follows:
   The primitive and median stegosaurid is 4 meters long. The jugal is of normal development and two supraorbital elements are present. There is a developed coronoid process of mandible, a small antiorbital fenestra in the maxillary and a small posterior foramen in the suragular. The premaxillary bears teeth with denticutale margins in the crown and no cingula at the base. In the sacral region there are four co-ossified vertebrae spines of sacral series has become firm1y coalesced with each other, forming a lower blade, with three pairs of perforated notch in it. The bony plates and spines vary in shape on the back.
   Some writers believed that the suborder could have its European origin, but the primitive Huayangosaurus found in Sichuan basin seems to indicate that it might posses its origin in Eastern Asia.

卷期:20卷 01期

 

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