古脊椎动物学报2021，Vol.59Issue(2)：81-94,14.DOI:10.19615/j.cnki.1000-3118.201124
义县组上部一件无齿翼龙超科前肢及对金刚山义县翼龙的修订
A new pteranodontoid pterosaur forelimb from the upper Yixian Formation,with a revision of Yixianopterus jingangshanensis
摘要
Abstract
Pterosaurs in the Jehol Biota have been found in the Yixian and Jiufotang formations.The Jingangshan bedding is in the upper part of the Yixian Formation.The first two pterosaur embryos ever discovered in the world,two archaeopterodactyloid specimens,and the questionable Yixianopterus jingangshanensis have been reported in previous literature.Here,we describe a forelimb from this horizon and confirm its phylogenetic position in the Pteranodontoidea.The holotype of Y.jingangshanensis,now housed at Benxi Geological Museum,has been examined.The diagnosis of this taxon has been revised without the consideration of the artificial parts as following,a pteranodontoid pterosaur with a distinguished combination of characters:triangular and labiolingually compressed teeth with the first two more slender and longer than the others;teeth vertical to the occlusal surface;the second wing phalanx about 93％the length of the first wing phalanx.In the Jehol Biota,archaeopterodactyloid specimens have been mainly discovered from the Yixian Formation,while tapejaroids are almost found from the Jiufotang Formation.Including the new forelimb and Y.jingangshanensis,the pteranodontoids from the Jiufotang Formation are slightly greater in number than those from the Yixian Formation in species and specimens,differing from the previous thoughts on the distribution.关键词
辽西/早白垩世/热河生物群/金刚山层/无齿翼龙超科/义县翼龙Key words
western Liaoning/Early Cretaceous/Jehol Biota/Jingangshan bedding/Pteranodontoidea/Yixianopterus分类
生物科学引用本文复制引用
蒋顺兴,张鑫俊,程心,汪筱林..义县组上部一件无齿翼龙超科前肢及对金刚山义县翼龙的修订[J].古脊椎动物学报,2021,59(2):81-94,14.基金项目
国家自然科学基金青年科学基金项目(批准号:41602011)、中国科学院青年创新促进会(编号:2019075)、国家自然科学基金面上项目(批准号:41572020、42072017)和国家自然科学基金基础科学中心项目(批准号:41688103)资助. （批准号:41602011）
