Abstract: Three species have been referred to Shantungosuchus to date. The type species S. chuhsienensis (Young, 1961) is represented by an articulated skeleton preserved as an impression of its ventral surface. S. hangjinensis was recently described by Wu et al. (1994) on the basis of an incomplete skull (with the mandible) and the part of the postcranial skeleton. The third species is S. brachycephalus, which will be restudied in the present paper. S. brachycephalus was erected by Young for a specimen, consisting of partial skull and some postcranial elements (V4020). It was pub lished in one of Young's posthumous papers in 1982. Because the specimen was not fully prepaired when it was studied, Young's original description is very simple and there exist errors in his identification of bone structures. For example, the four associated cervical vertebrae were described as osteoderms; the teeth are point rather than blunt in tip; and the left ramus of the mandible was identified as the humerus. Further repairation of the specimen shows many unknown features, especially characters from the palate, mandible and vertebrae. Those are significant in our understanding of the morphology of S. brachycephalus and also important in establishing interspecific relationships within the genus.

摘要： 根据对原标本的进一步修理，本文首先对宽头山东鳄(Shantungosuchus brachycephalus Young, 1982)进行了重新记述，并对其特征作了修订。其主要特征为:头骨相对较宽;眶前孔小，上下分隔为二;轭骨前端不参与构成但接近眶前孔的后边缘;牙齿尖锐，第三枚上颌齿异常粗壮，比其它上颌齿至少大一倍;腭面诸骨表面光滑;基蝶骨腹面中央凹槽前窄后宽变化显著;侧欧氏管孔位十基蝶骨、基枕骨和外枕骨3者之间;下颌外孔大，齿骨后缘分为上、中、下三支;肩胛骨前外侧肩峰之上，发育一显著的嵴状突起。其次，把