燕辽生物群的两件蛙嘴翼龙类新标本及对蛙嘴翼龙类头骨的新解释OA
Two anurognathid pterosaur specimens from the Yanliao Biota and a new interpretation of anurognathid skulls
蛙嘴翼龙是一类从中侏罗世到早白垩世时期分布于欧亚大陆的小型非翼手龙类翼龙.其主要的鉴别特征是短而宽的头骨,这一形态与所有其他翼龙类群都不同.由于保存的原因,蛙嘴翼龙类的头骨结构长期以来一直都存在争议.详细描述了两件来自燕辽生物群髫髻山组的蛙嘴翼龙类标本,并对其中一件标本中保存相对完好的头骨进行了计算机断层扫描与重建.结果显示,该头骨存在一个与大部分翼龙都不相同的独特的骨骼结构,其功能可能类似其他爬行类的眶上骨.基于对该标本头骨的研究,对之前未详细描述的其他蛙嘴翼龙类头骨进行了修订,最终重建了一个新的蛙嘴翼龙类头骨复原图.同时还对蛙嘴翼龙类的头后骨骼部分进行了更为全面的比较分析和讨论.
Anurognathids are a clade of small,early-diverging non-pterodactyloid pterosaurs distributed across Eurasia from the Middle Jurassic to the Early Cretaceous.Their defining characteristic is a short and broad skull,a morphology distinct from all other pterosaur clades.Due to limited preservation,the cranial anatomy of this group has long been difficult to understand in detail.In this study,we provide a detailed description of two anurognathid specimens from the Tiaojishan Formation of the Yanliao Biota.The relatively well-preserved skull of one specimen was reconstructed through computed tomographic scanning.This reveals a unique skull element,possibly functionally analogous to the supraorbital bone of varanid lizards.The CT reconstruction offers new insights into the anurognathid skull.Based on these findings,we revised the skulls of previously described taxa,ultimately integrating them into a new reconstruction for this clade.We present a detailed comparative analysis and discussion of the postcranial osteology within Anurognathidae.
佟仕达;蒋顺兴;程心;汪筱林
中国科学院古脊椎动物与古人类研究所,脊椎动物演化与人类起源重点实验室 北京 100044||中国科学院大学地球与行星科学学院 北京 100049中国科学院古脊椎动物与古人类研究所,脊椎动物演化与人类起源重点实验室 北京 100044吉林大学地球科学学院 长春 130061中国科学院古脊椎动物与古人类研究所,脊椎动物演化与人类起源重点实验室 北京 100044||中国科学院大学地球与行星科学学院 北京 100049
生物科学
燕辽生物群髫髻山组翼龙蛙嘴翼龙类古尾翼龙属
Yanliao BiotaTiaojishan FormationPterosaurAnurognathidCascocauda
《古脊椎动物学报（中英文）》 2026 (2)
191-220,30
国家自然科学基金(批准号:42072017,42288201,42572026)资助. This manuscript is dedicated to Prof.Chang Meemann,who has generously supported our pterosaur research.We had the honor of naming Gegepterus changae after her in 2007.We thank Xiang Long for preparing the specimens,Song Junyi and Xu Yizhi for their helpful discussions,and Hou Yemao and Yin Pengfei for their assistance with CT scanning(IVPP).We also thank Zhang Yuguang and Liu Di(NHMC),Liu Fengxiang and Tan Kai(GMC),Sun Zhenyuan and Wang Cai(JZMP),Zhang Ying,Li Xuemin,and Lü Huiwen(Changyang Paleontological Museum)and O.W.M.Rauhut(BSP)for kindly providing access to the specimens.This work was supported by the National Natural Science Foundation of China(42072017,42288201,and 42572026).
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