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古脊椎动物学报 ›› 1993, Vol. 31 ›› Issue (04): 308-314.

• 古脊椎动物学报 • 上一篇    下一篇

四川自贡大山铺中侏罗世肉食龙一新种

高玉辉   

  • 出版日期:1993-12-15 发布日期:1993-12-15

A NEW SPECIES OF SZECHUANOSAURUS FROM THE MIDDLE JURASSIC OF DASHANPU, ZIGONG, SICHUAN

Gao Yuhui   

  • Published:1993-12-15 Online:1993-12-15

摘要: 自贡四川龙(Szechuanosaurus zigongensis sp. nov.)为自贡市大山铺蜀龙动物群中发现的又一肉食龙新材料,本文对它进行了记述。

Abstract: A rather complete dinosaur skeleton was discovered from the Dashanpu Quarry in 1984. The new material contains 10 cervical vertebrae, 13 dorsals, 5 sacra Is and 25 caudals, together with a whole set of left forelimb, right scapular and pelvic girdle, this individual is considered as a new species of Szechuanosaurus, S. zigongensi; and is described here in this paper. Diagnosis of S. zigongensis A medium sized megalosaur, about 6 m in length; 10 cervicals, the last two planocoelous, with ventral keel; 13 dorsals, 5 coalesced sacrals. Distal caudals with elongate prezygapophyses. Deltopectoral crest of humerus well developed; length ratio of radius to humerus is 56%. Meta carpal IV short and light. Ilium especially low; pubis with foot-like distal end. Distal end of Ischium expanded.