A new pterosaur (Ctenochasmatidae, Archaeopterodactyloidea) from the Lower Cretaceous Yixian Formation of China

IVPP-IR > 中科院古脊椎所（2000年以后）

	A new pterosaur (Ctenochasmatidae, Archaeopterodactyloidea) from the Lower Cretaceous Yixian Formation of China
	Wang, Xiaolin ; Kellner, Alexander W. A.; Zhou, Zhonghe; Campos, Diogenes de Almeida ; Wang, XL (reprint author), Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, POB 643, Beijing 100044, Peoples R China.
	2007-04-01
发表期刊	CRETACEOUS RESEARCH
ISSN	0195-6671
卷号	28 期号:2 页码:245-260
文章类型	Article
摘要	A partial skeleton (including skull, mandible and soft tissue) of a new archaeopterodactyloid pterosaur, Gegepterus changi gen. et sp. nov. from the Lower Cretaceous of Liaoning, northeast China is described. The specimen, IVPP V 11981, was collected from grey shales of the lower Yixian Formation (125 Ma) at the Sihetun locality, near the city of Beipiao. Several elements (cranial bones, scapula-coracoid) are not fused, suggesting that it probably represents a sub-adult individual at the time of death. Soft tissue is found near the posterior region of the skull, inside the orbit and associated with the gastralia. It is formed of an amorphous dark mineralized substance and does not show any particular structure except in an area at the posterior part of the skull where small, dark, unbranched fibres are present. Gegepterus changi shows synapornorphies of the Archaeopterodactyloidea sensu Kellner, 2003 (elongated mid-cervical vertebrae with low, blade-like neural spine and strongly inclined quadrate) and shares with the Gallodactylidae and the Ctenochasmatidae a concave dorsal margin of the skull. It further has a large number of thin, needle-like teeth and a long rostrum (anterior to the nasoantorbital fenestra) allowing its allocation to the Ctenochasmatidae, thus making it the first uncontroversial member of this pterosaur clade in the Jehol Group. Gegepterus changi is diagnosed by several unique features (e.g., extensive sculpturing of frontals; anterior lacrimal process overlying the nasal; neural spine with knob-like dorsal expansion) and has cervical vertebrae that combine primitive and derived features (e.g., cervical ribs, postexapophyses, lateral pneumatic foramen) that have not been recorded in any member of Archaeopterodactyloidea so far. (C) 2006 Elsevier Ltd. All rights reserved.; A partial skeleton (including skull, mandible and soft tissue) of a new archaeopterodactyloid pterosaur, Gegepterus changi gen. et sp. nov. from the Lower Cretaceous of Liaoning, northeast China is described. The specimen, IVPP V 11981, was collected from grey shales of the lower Yixian Formation (125 Ma) at the Sihetun locality, near the city of Beipiao. Several elements (cranial bones, scapula-coracoid) are not fused, suggesting that it probably represents a sub-adult individual at the time of death. Soft tissue is found near the posterior region of the skull, inside the orbit and associated with the gastralia. It is formed of an amorphous dark mineralized substance and does not show any particular structure except in an area at the posterior part of the skull where small, dark, unbranched fibres are present. Gegepterus changi shows synapornorphies of the Archaeopterodactyloidea sensu Kellner, 2003 (elongated mid-cervical vertebrae with low, blade-like neural spine and strongly inclined quadrate) and shares with the Gallodactylidae and the Ctenochasmatidae a concave dorsal margin of the skull. It further has a large number of thin, needle-like teeth and a long rostrum (anterior to the nasoantorbital fenestra) allowing its allocation to the Ctenochasmatidae, thus making it the first uncontroversial member of this pterosaur clade in the Jehol Group. Gegepterus changi is diagnosed by several unique features (e.g., extensive sculpturing of frontals; anterior lacrimal process overlying the nasal; neural spine with knob-like dorsal expansion) and has cervical vertebrae that combine primitive and derived features (e.g., cervical ribs, postexapophyses, lateral pneumatic foramen) that have not been recorded in any member of Archaeopterodactyloidea so far. (C) 2006 Elsevier Ltd. All rights reserved.
关键词	Pterosauria Archaeopterodactyloidea Ctenochasruatidae Liaoning Early Cretaceous China
WOS标题词	Science & Technology ; Physical Sciences ; Life Sciences & Biomedicine
URL	查看原文
关键词[WOS]	LIAONING PROVINCE ; CRANIAL CREST ; PTERODACTYLOIDEA ; BIOSTRATIGRAPHY
收录类别	SCI
语种	英语
WOS研究方向	Geology ; Paleontology
WOS类目	Geology ; Paleontology
WOS记录号	WOS:000246762700011
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/3367
专题	中科院古脊椎所（2000年以后）古低等脊椎动物研究室
通讯作者	Wang, XL (reprint author), Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, POB 643, Beijing 100044, Peoples R China.
作者单位	1.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R China 2.Univ Fed Rio de Janeiro, Museu Nacl, Setor Paleovertebrados, BR-20940040 Rio De Janeiro, Brazil 3.Museu Ciencias Terra, Dept Nacl Prod Mineral, BR-22290240 Rio De Janeiro, Brazil
推荐引用方式 GB/T 7714	Wang, Xiaolin,Kellner, Alexander W. A.,Zhou, Zhonghe,et al. A new pterosaur (Ctenochasmatidae, Archaeopterodactyloidea) from the Lower Cretaceous Yixian Formation of China[J]. CRETACEOUS RESEARCH,2007,28(2):245-260.
APA	Wang, Xiaolin,Kellner, Alexander W. A.,Zhou, Zhonghe,Campos, Diogenes de Almeida,&Wang, XL .(2007).A new pterosaur (Ctenochasmatidae, Archaeopterodactyloidea) from the Lower Cretaceous Yixian Formation of China.CRETACEOUS RESEARCH,28(2),245-260.
MLA	Wang, Xiaolin,et al."A new pterosaur (Ctenochasmatidae, Archaeopterodactyloidea) from the Lower Cretaceous Yixian Formation of China".CRETACEOUS RESEARCH 28.2(2007):245-260.

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