文献类型： 外文期刊
作者： Hilton, Eric J. 1 ; Dillman, Casey B. 1 ; Zhang, Tao 2 ; Zhang, Longzhen 2 ; Zhuang, Ping 2 ;
作者机构： 1.Virginia Inst Marine Sci, Coll William & Mary, Gloucester Point, VA 23062 USA
2.Chinese Acad Fishery Sci, East China Sea Fisheries Res Inst, 300 Jun Gong Rd, Shanghai 200090, Peoples R China
3.Smithsonian Inst, Natl Museum Nat Hist, Washington, DC 20560 USA
关键词： Acipenseriformes; Actinopterygii; anatomy; cranium; osteologyi
期刊名称：ACTA ZOOLOGICA （ 影响因子：1.261； 五年影响因子：1.498 ）
ISSN： 0001-7272
年卷期： 2016 年 97 卷 4 期
页码：
收录情况： SCI
摘要： The Chinese sturgeon, Acipenser sinensis, is a large member of Acipenseridae now found only in the Yangtze River and the Yellow and East China seas. The goal of this paper was to describe the skull of A. sinensis in the context of recent anatomical and systematic studies of sturgeons. Five specimens (354-670 mm standard length) were prepared as skeletons. The left and right parietals and frontals are broadly separated by a median fontanelle. The lateral-most lateral extrascapular variably supports the confluence of the supratemporal, occipital and trunk lateral lines. There is no distinct ventral supraorbital process as found in other sturgeons. The anterodorsal portion of the snout is unique among Acipenseridae by having a single large anamestic dorsal rostral bone instead of a series of separate dorsal rostral bones. There are 0-2 lateral rostral bones on each side positioned anterior to but not in contact with the horizontal arm of the jugal. The dorsal surface of the neurocranium lacks a pineal opening, and its anterior tip is sharply pointed in the smaller specimens examined and gently curved in larger specimens. The anteromedial arm of the palatopterygoid is broad relative to other acipenserids. These new morphological data are discussed and compared among Acipenseridae.
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