【摘要】 <正>1985年,自贡恐龙博物馆的朱时达、高人彦、彭光照根据四川威远县荣胜乡沙坝村村民李元吉、李鸣章的报告和地矿部第二地质大队提供的资料,在威远县荣胜乡老鸦坡下侏罗统珍珠冲组下部黄色砂岩上发掘出6个连续恐龙足迹化石,并把这批标本运回自贡恐龙博物馆保存。更多还原

【Abstract】 Weiyuanpus zigongensis ichnogen,et ichnosp,nov.,a new form of dinosaur footprints is described in this note.The material (ZDM 0032) includes the trackway consisting of 6 succes- sive footprints. Locality and horizon Weiyuan,Sichuan;Lower Jurassic,lower Zhenzhuchong Formation. Diagnosis A relatively large-sized footprint,41～43 cm in length,31～33 cm in width. The ratio of width to length of the footprint about 72%.Biped,digitigrade,with three clawed toes (Ⅱ,Ⅲ,Ⅳ),lacking impression of hallux,or toeⅤ,and tail.The angles between the phalanges areⅡ23°Ⅲ26°Ⅳ.The length of pes and stride is in a ratio of about 1:5.8.ToeⅢis longer thanⅡandⅣ. Discussion According to the above features the material (ZDM 0032) is referable to Eu- brontidae among Carnosauria.Eubrontidae contains two genera in China:Eubrontes platypus and Youngichnus xiyangensis.The differential diagnoses for Weiyuanpus,Eubrontes platypus and Youngichnus xiyangensis are listed as follows: Eubrontes platypus is represented by medium-sized footprints,26 cm in length,Ⅱ12°Ⅲ22°Ⅳ.The length of pes and stride is in a ratio of about 1:8.7.Weiyuanpus zigongensis is re- presented by a relatively large footprint,43 cm in length,Ⅱ23°Ⅲ26°Ⅳ,and the length of pes and stride is in a ratio of about 1:5.8.Youngichnus xiyangensis is represented by medium-sized footprints,26 cm in length,and the toeⅣnearly parallelsⅢ.更多还原