银鲛目

软骨鱼纲中的一目.体由前向后逐步变细.头大，侧扁.口腹位，上颌与脑颅愈合. 背鳍２个，第一背鳍具有强大的硬棘，可以自由竖垂.体表光滑，无鳞（幼体具有盾鳞）。胸鳍特宽大.雄鱼除 鳍脚外，尚具腹前鳍脚及额鳍脚.本目共分三科： 叶吻银鲛科（Ｃａｌｏｒｈｉｎｃｈｉｄａｅ）吻端延长平扁呈叶状； 银鲛科（Ｃｈｉｍａｅｒｉｄａｅ）中国仅产此一科，吻短，圆锥形； 长吻银鲛科（Ｒｈｉｎｏｃｈｉｍａｅｒｉｄａｅ）吻长而尖.Chondrichthyes in a mesh. Body progressively thinner from front to back. The first large, side-bian. Avoid unnecessary bits, upper jaw and skull healing. Dorsal fins 2, the first dorsal fin with a strong, hard spines, are free vertical hanging. Surface smooth, without scales (scales larvae with shield). Special large pectoral fins. Male except fins, the fin is still a pre-feet and the amount of abdominal fins. The mesh is divided into three sections: the leaf kiss silver shark Branch (Calorhinchidae) rostral extension of Ping bian was phyllodes; silver shark Branch (Chimaeridae) China only the middle of this Section, the kiss is short, conical; long-nosed chimaera Branch (Rhinochimaeridae) kiss long and pointed.