Cranial morphology of the Silurian sarcopterygian Guiyu oneiros (Gnathostomata: Osteichthyes)

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	Cranial morphology of the Silurian sarcopterygian Guiyu oneiros (Gnathostomata: Osteichthyes)
	Qiao Tuo 1,2; Zhu Min 1
	2010-12-01
发表期刊	SCIENCE CHINA-EARTH SCIENCES
卷号	53 期号:12 页码:1836-1848
文章类型	Article
摘要	Cranial morphological features of the stem-group sarcopterygian Guiyu oneiros Zhu et al., 2009 provided here include the dermal bone pattern and anatomical details of the ethmosphenoid. Based on those features, we restored, for the first time, the skull roof bone pattern in the Guiyu clade that comprises Psarolepis and Achoania. Comparisons with Onychodus, Achoania, coelacanths, and actinopterygians show that the posterior nostril enclosed by the preorbital or the preorbital process is shared by actinopterygians and sarcopterygians, and the lachrymals in sarcopterygians and actinopterygians are not homologous. The endocranium closely resembles that of Psarolepis, Achoania and Onychodus; however, the attachment area of the vomer possesses irregular ridges and grooves as in Youngolepis and Diabolepis. The orbito-nasal canal is positioned mesial to the nasal capsule as in Youngolepis and porolepiforms. The position of the hypophysial canal at the same level or slightly anterior to the ethmoid articulation represents a synapmorphy of the Guiyu clade. The large attachment area of the basicranial muscle indicates the presence of a well-developed intracranial joint in Guiyu.
关键词	Sarcopterygii Osteichthyes Cranial Morphology Homology Silurian China
WOS标题词	Science & Technology ; Physical Sciences
关键词[WOS]	LOPHOSTEUS-SUPERBUS PANDER ; BONY FISHES ; FOSSIL FISH ; TETRAPODS ; PALEONTOLOGY ; ORIGIN ; INTERRELATIONSHIPS ; PSAROLEPIS ; CHARACTERS ; AUSTRALIA
收录类别	SCI
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000284845600010
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/1892
专题	古低等脊椎动物研究室
作者单位	1.Chinese Acad Sci, Key Lab Evolutionary Systemat Vertebrates, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Qiao Tuo,Zhu Min. Cranial morphology of the Silurian sarcopterygian Guiyu oneiros (Gnathostomata: Osteichthyes)[J]. SCIENCE CHINA-EARTH SCIENCES,2010,53(12):1836-1848.
APA	Qiao Tuo,&Zhu Min.(2010).Cranial morphology of the Silurian sarcopterygian Guiyu oneiros (Gnathostomata: Osteichthyes).SCIENCE CHINA-EARTH SCIENCES,53(12),1836-1848.
MLA	Qiao Tuo,et al."Cranial morphology of the Silurian sarcopterygian Guiyu oneiros (Gnathostomata: Osteichthyes)".SCIENCE CHINA-EARTH SCIENCES 53.12(2010):1836-1848.

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