摘要
鹦鹉嘴龙是一类特征明显,仅分布于东亚地区早白垩世的原始角龙类。通过对青岛地区发现的鹦鹉嘴龙化石进行骨骼形态特征描述、CT扫描及三维重建,发现其具有中国鹦鹉嘴龙的鉴定特征,如吻骨腹缘低于上颌齿列;前颌骨与颧骨直接接触,且侧面扁平;上颌骨外侧面没有凹槽和瘤突;齿骨边棱突不发育;上隅骨大于隅骨。这一发现不仅进一步扩大了中国鹦鹉嘴龙的地理分布范围和地层分布延限,而且为辛格庄组地层时代的确定提供了关键的化石证据。
The Psittacosaurus are primitive ceratopsian dinosaurs with unique characteristics and confined distribution during the Early Cretaceous in East Asia.By morphological description,CT scan and 3D reconstruction of the fossils of Psittacosaurus uncovered in Qingdao,it is found that the new materials can be referred to Psittacosaurus sinensis,possessing the following diagnostic characteristics:the ventral margin of the rostral is lower than the maxillary dentation;the premaxilla connects with the jugal directly and has a flat lateral surface;the lateral surface of the maxilla has no sulcus or node;the dentary flange is not developed;the surangular is larger than the angular.This discovery not only expands the geographic distribution and stratigraphic range of Psittacosaurus sinensis,but also provides key fossil evidence for ascertaining the geological time of Xingezhuang Formation.
作者
任天龙
王旭日
黄永波
王来明
王金光
张贵丽
清格勒
REN Tianlong;WANG Xuri;HUANG Yongbo;WANG Laiming;WANG Jinguang;ZHANG Guili;QING Gele(Department of Geology, Shandong Institute of Geological Survey, Jinan, Shandong 250013, China;Key Laboratory of Stratigraphy and Paleontology, Ministry of Natural Resources, Beijing 100037, China;Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China;Department of Research and Protection, Inner Mongolia Museum of Natural History, Hohhot, Inner Mongolia 010020, China)
出处
《山东科技大学学报（自然科学版）》
CAS
北大核心
2022年第3期17-26,共10页
Journal of Shandong University of Science and Technology(Natural Science)
基金
国家自然科学基金项目(41872018)
中国地质调查局项目(DD20221649)
山东省地质勘查项目(鲁勘字(2019)54号)。
关键词
胶莱盆地
早白垩世
辛格庄组
角龙类
鹦鹉嘴龙属
Jiaolai basin
Early Cretaceous
Xingezhuang Formation
Ceratopsia
Psittacosaurus
