A New Species of Weltrichia Braun in North China with a Special Bennettitalean Male Reproductive Organ
本内苏铁类雄性生殖器官Weltrichia属一新种
查看参考文献20篇
文摘
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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, Inner Mongolia (Nei Mongol) Autonomous Region, China. It is a unisexual male strobile hich was a laterally compressed preserved specimen being fan-shaped and appearing as half of a whole. Its base and peduncle are lost while the lower part of the strobile consists of eleven narrowly wedged sements fused together into a funnel or cup-like. In the upper part of the strobile these segments separate into free structure (microsporophylls), each bearing two rows of pollen sacs (synangia). In this paper a new pecies W. daohugouensis Li et Zheng sp. nov. is described and the identification of the W. huangbanjigouensis Sun et Zheng is emended. |
其他语种文摘
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报道了本内苏铁类雄性生殖器官Weltrichia属的一个新种——Weltrichia 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,上部裂开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W. huangbanjigouensis Su et Zheng 的鉴定特征进行了修订。 |
来源
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Acta Botanica Sinica
,2004,46(11):1269-1275 【核心库】
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关键词
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ningcheng county
;
inner mongolia
;
haifanggou formation
;
bennettitalean male strobile
;
weltrichia daohugouensis sp. nov.
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地址
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1.
Shenzhen Fairy Lake Botanical Garden, Shenzhen, 518004
2.
Office of Fossil Protection and Management of Liaoning Province, Shenyang, 110032
3.
Shenyang Institute of Geology and Mineral Resources, Shenyang, 110032
4.
Shenyang Institute of Geology and Mineral Resources,, Shenyang, 110032
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语种
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英文 |
文献类型
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研究性论文 |
ISSN
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1672-6650 |
学科
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植物学 |
基金
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广东省深圳市项目
;
广东省深圳市项目
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文献收藏号
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CSCD:1846847
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