【作者】 李楠； 李勇； 王丽霞； 郑少林； 张武；

【Author】 Li Nan, Li Yong, Wang Li-Xia, Zheng Shao-Lin, Zhang Wu(Shenzhen Fairy Lake Botanical Garden, Shenzhen 518004, China;Office of Fossil Protection and Management of Liaoning Province, Shenyang 110032, China;Shenyang Istitute of Geology and MineralResources, Shenyang 110032, China.)

【机构】 深圳市仙湖植物园； 辽宁省国土资源厅化石保护管理处； 沈阳地质矿产研究所；

【摘要】 报道本内苏铁类雄性生殖器官Weltrichia属的一个新种——W.daohugouensis sp.nov.,标本发现于内蒙古宁城山头乡道虎沟村附近的中侏罗统海房沟组。它是一个分离保存的本内苏铁类单性雄球花(球穗花序),在侧向压缩的平面上展开,呈扇形。基部球花梗未保存,下部由11个窄楔形的裂片融合成漏斗状或杯状,上部分裂成数目相等的游离的小孢子叶。每个小孢子叶的上部有两列花粉囊。文中对新种进行了详细地描述和讨论。并对Weltrichia huangban jigouensis Su et Zheng的鉴定特征进行了修订。更多还原

【Abstract】 We report a new species of the genus Weltrichia Braun with a special Bennettitalean male reproductive organ-W. daohugouensis Li et Zheng sp. nov., which was discovered from Haifanggou Formation (Middle Jurassic) in Daohugou village, Shantou town, Ningcheng County, Nei Mongol Autonomous Region, China. It is a unisexual male strobile which was a laterally compressed preserved specimen being fan shaped and appearing as as half of a whole. Its base and peduncle are lost while the lower part of the strobile consists of eleven narrowly wedged segments fused together into a funnel or cup-like. In the upper part of the strubile these segments separat into free structure (microsporophylls), each bearing two rows of pollen sacs (synangia). In this paper a new species Weltrichia daohugouensis Li et Zheng sp. nov. is described and the identification of the Weltrichia huangbanjigouensis Sun et Zheng is emended.更多还原