短吻贫齿龙是根据一保存较完整的头骨和下颌标本建立的;标本采自贵州关岭地区三叠系法郎组灰岩。对其头后骨骼进行了详细描述。短吻贫齿龙在肩带的乌喙骨和间锁骨及腰带的肠骨显示了与众不同的特征,例如:紧靠肩臼后方乌喙骨有一明显的凹,间锁骨后半部比前部要窄很多,及肠骨背突末端加宽等。头骨进一步细修表明,其中一些部位需要进行重新记述。依据头后骨骼和头骨中的新信息,对短吻贫齿龙的特征作了修订。系统关系分析表明,贫齿龙是个askeptosaurid,其下颌宽大于长的反关节突和肱骨缩小的三角-胸大肌嵴表明它与产自瑞士和意大利的Askeptosaurus关系最近。 Ankylosaurus is based on a well-preserved skull and mandible specimen; the specimen was collected from the Triassic Fraser limestone in the Guanling area, Guizhou. The back bone is described in detail. Short-leopard Odontosaurus in the shoulder strap of the black coracoid and between the clavicle and belly bowel showed distinctive features, for example: close to the acetabular rear black colar bone has a significant depression, between the latter part of the clavicle than before Department to a lot of narrow, and dorsal end of the bowel widening. Further refinement of the skull indicates that some of these parts need to be remembered. Based on new information in the posterior head bones and skulls, the characteristics of the kinky dragon were revised. The phylogenetic analysis showed that the poor tooth dragon is an askeptosaurid whose mandible width is greater than the length of the long anti-articular process and the narrowing triangle of the humerus-the pectoral major crest indicates that it has the closest relationship with Askeptosaurus originating in Switzerland and Italy.