New data on the cranial anatomy of Pterogonaspis (Tridensaspidae, Galeaspida) from the lower Devonian of Yunnan, China and its evolutionary implications

doi:10.1002/ar.25098

IVPP-IR > 中科院古脊椎所（2000年以后）

	New data on the cranial anatomy of Pterogonaspis (Tridensaspidae, Galeaspida) from the lower Devonian of Yunnan, China and its evolutionary implications
	Meng, Xin-Yuan 1,2; Zhu, Min1,2,3 ; Li, Qiang4 ; Gai, Zhi-Kun 1,2,3
	2022-10-21
发表期刊	ANATOMICAL RECORD-ADVANCES IN INTEGRATIVE ANATOMY AND EVOLUTIONARY BIOLOGY
ISSN	1932-8486
期号	2022 页码:14
摘要	New material of the tridensaspid Pterogonaspis yuhaii is described from the Xujiachong Formation in Qujing City, Yunnan Province, revealing the morphology of the ventral side of the headshield for the first time. Most significantly, the cranial anatomy of Pterogonaspis provides the first fossil evidence for the position of the esophagus in galeaspids. The esophagus and dorsal aortae display a central placement in the postbranchial region and do not share a common canal as in osteostracans. Moreover, the paired and symmetrically extending dorsal aortae in galeaspids strikingly resemble those of jawed vertebrates, probably representing a plesiomorphic condition for vertebrates because they are also present in amphioxus and hagfishes. In contrast, the unpaired and asymmetrically extending dorsal aorta in osteostracans is similar to that of lampreys, probably resulting from convergent evolution. In addition, our new data also exhibit some characters that galeaspids uniquely share with osteostracans, such as the complete endoskeletal postbranchial wall and the extensive lateral expansion of the headshield with the marginal arteries and veins.
关键词	dorsal aorta esophagus Pterogonaspis Qujing Yunnan
DOI	10.1002/ar.25098
关键词[WOS]	BLOOD-VESSELS ; SP-NOV ; PHYLOGENY ; DIVERSITY ; HEART
收录类别	SCI
语种	英语
资助项目	National Program for support of Top-notch Young Professionals ; Strategic Priority Research Program of CAS[XDB26000000] ; National Nature Science Foundation of China[41972006]
WOS研究方向	Anatomy & Morphology
WOS类目	Anatomy & Morphology
WOS记录号	WOS:000870899400001
出版者	WILEY
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/22015
专题	中科院古脊椎所（2000年以后）
通讯作者	Gai, Zhi-Kun
作者单位	1.Chinese Acad Sci, Key Lab Vertebrate Evolut & Human Origins Chinese, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.CAS Ctr Excellence Life & Paleoenvironm, Beijing, Peoples R China 4.Qujing Normal Univ, Res Ctr Nat Hist & Culture, Qujing, Peoples R China
推荐引用方式 GB/T 7714	Meng, Xin-Yuan,Zhu, Min,Li, Qiang,et al. New data on the cranial anatomy of Pterogonaspis (Tridensaspidae, Galeaspida) from the lower Devonian of Yunnan, China and its evolutionary implications[J]. ANATOMICAL RECORD-ADVANCES IN INTEGRATIVE ANATOMY AND EVOLUTIONARY BIOLOGY,2022(2022):14.
APA	Meng, Xin-Yuan,Zhu, Min,Li, Qiang,&Gai, Zhi-Kun.(2022).New data on the cranial anatomy of Pterogonaspis (Tridensaspidae, Galeaspida) from the lower Devonian of Yunnan, China and its evolutionary implications.ANATOMICAL RECORD-ADVANCES IN INTEGRATIVE ANATOMY AND EVOLUTIONARY BIOLOGY(2022),14.
MLA	Meng, Xin-Yuan,et al."New data on the cranial anatomy of Pterogonaspis (Tridensaspidae, Galeaspida) from the lower Devonian of Yunnan, China and its evolutionary implications".ANATOMICAL RECORD-ADVANCES IN INTEGRATIVE ANATOMY AND EVOLUTIONARY BIOLOGY .2022(2022):14.

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