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; Zhu Min; zhumin@ivpp.ac.cn
刊名	SCI CHINA EARTH SCI
	2010
卷号	53 期号:12 页码:1836—1848
关键词	Lophosteus-superbus Pander Bony Fishes Fossil Fish Tetrapods Paleontology Origin Interrelationships Psarolepis Characters Australia
ISSN号	1674-7313
英文摘要	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.
URL标识	查看原文
公开日期	2013-11-27
内容类型	期刊论文
源URL	[http://119.78.100.205/handle/311034/4504]
专题	古脊椎动物与古人类研究所_图书馆1
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.