A NEW RHAMPHORHYNCHID PTEROSAUR FROM THE UPPER JURASSIC OF XINJIANG, CHINA, AND THE PHYLOGENETIC RELATIONSHIPS OF BASAL PTEROSAURS
A NEW RHAMPHORHYNCHID PTEROSAUR FROM THE UPPER JURASSIC OF XINJIANG, CHINA, AND THE PHYLOGENETIC RELATIONSHIPS OF BASAL PTEROSAURS
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DOI：
10.1080/02724630903409220
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发表时间：
2010-01-01
影响因子：
1.4
通讯作者：
Xing, Xu
中科院分区：
文献类型：
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作者：
Andres, Brian;Clark, James M.;Xing, Xu
本文记述了喙嘴翼龙科一新种，五彩湾锯尾翼龙，gen.et sp.nov.新疆石树沟组上侏罗统部分。该单元的翼龙化石是中国西北地区侏罗纪最早也是唯一的翼龙化石记录。这是已知的最大的标本之一，属于“喙喙类”，或非翼手龙科翼龙。正模标本包括一个相连的骨骼，大部分是不相连的，大部分是三维的。虽然部分粉碎，保存在这个标本揭示了形态罕见的非翼手龙。这包括一个独特的颈椎椎间关节形态，提出了广泛的非翼龙类。这一新标本的头骨与其他在陆地沉积物中发现的喙嘴类，长头Angustinaripterus和Harpactognathus gentryii最相似。对18种非翼手龙科的翼龙和翼手龙总科的系统发育分析表明，五彩湾锯尾翼龙与这些物种同属喙嘴龙亚科，属于单系喙嘴龙科。与以前的系统发育分析不同，双形齿兽科是并系的，曲颌兽科是多系的，而Anurognathidae是翼手龙总科的姐妹群。乌菜湾长吻翼龙、长头长吻翼龙、真颌翼龙代表大型翼龙的一个分支，可能生活在它们保存的陆地环境中。
A new rhamphorhynchid pterosaur species, Sericipterus wucaiwanensis, gen. et sp. nov., is described from the Upper Jurassic part of the Shishugou Formation in the Xinjiang Autonomous Region of northwest China. Pterosaurs from this unit are the earliest and only records of pterosaurs in the Jurassic of northwest China. The individual specimen is one of the largest known among 'rhamphorhynchoids,' or non-pterodactyloid pterosaurs. The holotype comprises an associated skeleton of mostly disarticulated, largely three-dimensional material. Although partly crushed, the preservation in this specimen reveals morphology rarely seen in non-pterodactyloid pterosaurs. This includes a distinct cervical intervertebral articulation morphology that is proposed to be widespread among the non-pterodactyloids. The skull of this new specimen is most similar to that of other rhamphorhynchids, Angustinaripterus longicephalus and Harpactognathus gentryii, found in terrestrial deposits. A phylogenetic analysis of 18 non-pterodactyloid pterosaurs and the Pterodactyloidea places Sericipterus wucaiwanensis with these species within the Rhamphorhynchinae and a monophyletic Rhamphorhynchidae. Unlike previous phylogenetic analyses, the Dimorphodontidae is paraphyletic, the Campylognathoididae is polyphyletic, and the Anurognathidae is the sister group of the Pterodactyloidea. Sericipterus wucaiwanensis, Angustinaripterus longicephalus, Harpactognathus gentryii represent a clade of large pterosaurs that likely lived in the terrestrial settings in which they preserved.