Wonnacottia, a new Bennettitalean microsporophyll
Wonnacottia, a new Bennettitalean microsporophyll
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DOI：
10.1093/oxfordjournals.aob.a088422
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发表时间：
1942-10-01
期刊：
影响因子：
4.2
通讯作者：
Harris, TM
中科院分区：
文献类型：
--
作者：
Harris, TM
从约克郡中侏罗世岩石中描述了一种新的小孢子叶，它由一个轴和一个嵌入孢子囊的羽状分裂的薄片组成。孢子体是指与尼尔森无毛虫叶片相同的植物，主要是基于联结和角质层结构。WONNACOTTIA是一种特别有价值的植物，因为在后来的种子植物中，叶状孢子叶非常罕见。讨论了其他贝氏小孢子叶的可能起源和亲缘关系。
A new microsporophyll is described from the Middle Jurassic rocks of Yorkshire which consists of a rachis and a pinnately divided lamina with embedded sporangia. The sporophyll is referred to the same plant as the leaf Anomozamites nilssoni mainly on the bases of association and cuticle structures. WONNACOTTIA is of special interest because of the great rarity of leaf-like sporophylls in the later seed plants. A discussion of the possible origin and relationship of other Bennettitalean microsporophylls is given.