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

IVPP-IR > 中科院古脊椎所（2000年以后）

	Cranial morphology of the Silurian sarcopterygian Guiyu oneiros (Gnathostomata: Osteichthyes)
	Qiao Tuo; Zhu Min; zhumin@ivpp.ac.cn
	2010
发表期刊	SCI CHINA EARTH SCI
ISSN	1674-7313
卷号	53 期号:12 页码:1836—1848
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	Lophosteus-superbus Pander Bony Fishes Fossil Fish Tetrapods Paleontology Origin Interrelationships Psarolepis Characters Australia
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收录类别	SCI收录
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/4503
专题	中科院古脊椎所（2000年以后）
通讯作者	zhumin@ivpp.ac.cn
推荐引用方式 GB/T 7714	Qiao Tuo,Zhu Min,zhumin@ivpp.ac.cn. Cranial morphology of the Silurian sarcopterygian Guiyu oneiros (Gnathostomata: Osteichthyes)[J]. SCI CHINA EARTH SCI,2010,53(12):1836—1848.
APA	Qiao Tuo,Zhu Min,&zhumin@ivpp.ac.cn.(2010).Cranial morphology of the Silurian sarcopterygian Guiyu oneiros (Gnathostomata: Osteichthyes).SCI CHINA EARTH SCI,53(12),1836—1848.
MLA	Qiao Tuo,et al."Cranial morphology of the Silurian sarcopterygian Guiyu oneiros (Gnathostomata: Osteichthyes)".SCI CHINA EARTH SCI 53.12(2010):1836—1848.

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