2021-08-042021-08-042021-052021-05May 2021https://hdl.handle.net/2346/87584The basal sauropodomorphs are an important group of saurischian dinosaurs which include some of the earliest dinosaurs known to researchers, with the oldest taxa dating to the Late Triassic. Different members of the basal sauropodomorphs are closely related to several other groups, including the immediate ancestors to dinosaurs, theropods, and the true sauropods. Because of these close relations, a good understanding of the phylogenetic relationships between the basal sauropodomorphs is key to a broader understanding of early dinosaurs. Jingshanosaurus xinwaensis is an Early Jurassic sauropodomorph which has been recovered previously as a basal member of the clade Sauropodiformes, which eventually gave rise to the true sauropods. However, J. xinwaensis has suffered from a lack of cranial material for research, a problem that this study addresses. Specimen IVPP-13246 consists of 14 previously undescribed and disarticulated cranial bones from the skull roof, palatal complex and the lower jaw, as well as teeth preserved in good condition. The teeth are of particular interest partially because of their condition and also because of their unique form which is more similar to those seen in sauropods than in basal sauropodomorphs. These bones are described here and have characters scored and entered into a data matrix from another recent study. A phylogeny is then reconstructed from this data using PAUP*4.0a169. The results of this analysis do not show Jingshanosaurus as having changed position which lends robust support to the findings of previous studies. There is potential for future studies, particularly in relation to bones that had not been described for earlier skulls, such as the nasal and the vomer. application/pdfengPaleontologyDinosaurSauropodomorphChinaThesis2021-08-04Access is not restricted.