Pseudofrenelopsis fossils from Cretaceous gypsum beds in Guixi, Jiangxi Province, China and their geological significance
Pseudofrenelopsis fossils from Cretaceous gypsum beds in Guixi, Jiangxi Province, China and their geological significance
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江西贵溪白垩纪石膏层拟拟菱形化石及其地质意义
DOI：
10.1111/j.1440-1738.2010.00719.x
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发表时间：
2011-03
期刊：
影响因子：
1.5
通讯作者：
Wang, Yongdong
中科院分区：
文献类型：
--
作者：
Jia, Hui;Sun, Bainian;Yan, Defei;Dai, Jing;Jiang, Zikun;Wang, Yongdong
在江西省贵溪市周家店组石膏层中发现压缩植物化石。两种拟栉孔虫的表皮特征在这项研究中，通过扫描电子显微镜检查了（唇鳞科）：本文对两种植物的节间表皮、近轴叶表皮和远轴叶表皮进行了详细的观察和分析。扩展了我们对已灭绝的拟栉龙的形态和解剖特征的了解。本文报道了一新种，桂西拟无齿叶蝉Pseudofrenelopsis guixiensis sp. nov.，在比较其表皮特征的基础上，提出了一种新的分类方法。它不同于以前发表的种，因为它的叶背面有毛，有时在节间的表面上共享附属细胞，缺乏皮下组织，并且在其表皮细胞上没有乳突。由于Pseudofrenelopsis化石的分布范围仅限于下白垩统，因此确定了周家店组的时代为早白垩世。Pseudofrenelopsis化石具有明显的旱生特征，如角质层明显增厚，附属细胞有明显的乳突，垂周壁角质化强烈，与石膏层共生，与红层接近。所有这些特征都表明气候干旱。
Compressed fossil plants were found in the gypsum beds of the Zhoujiadian Formation in Guixi City, Jiangxi Province, China. The cuticular features of two species of Pseudofrenelopsis (Cheirolepidiaceae) were examined by scanning electron microscopy in this study: Pseudofrenelopsis papillosa Cao ex Zhou and Pseudofrenelopsis guixiensis Bainian Sun et Dai, sp. nov. A detailed analysis of the internode epidermis, and the adaxial and abaxial leaf cuticles of the two species, was performed, extending our knowledge of the morphological and anatomical characteristics of the extinct Pseudofrenelopsis. A new species, Pseudofrenelopsis guixiensis sp. nov., is proposed based upon comparison of its cuticular features. It differs from previously published species in that it has hairs on the abaxial surfaces of its leaves, sometimes shares subsidiary cells on the surfaces of internodes, lacks a hypodermis, and has no papillae on its epidermal cells. Because the distribution of fossil Pseudofrenelopsis is restricted to the Lower Cretaceous, the Early Cretaceous age of the Zhoujiadian Formation is affirmed. The fossils of Pseudofrenelopsis show obvious xeromorphic characteristics, such as apparent thickening of the cuticles, subsidiary cells with obvious papillae, and anticlinal walls with strong cutinization, and they are found associated with gypsum beds and close to red beds. All of these features indicate an arid climate.
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影响因子：
1.9
作者：
V. Srinivasan
通讯作者：
V. Srinivasan
影响因子：
3.4
作者：
R. Price;C. B. Beck
通讯作者：
R. Price;C. B. Beck
影响因子：
--
作者：
Bainian Sun;De-Fei Yan;S. Xie;Pei-yun Cong;Cunlin Xin;Fei Yun
通讯作者：
Bainian Sun;De-Fei Yan;S. Xie;Pei-yun Cong;Cunlin Xin;Fei Yun
影响因子：
3.4
作者：
J. Watson
通讯作者：
J. Watson
中国吉林下白垩统达拉子组 Pseudofrenelopsis dalatzensis (Chow et Tsao) Cao ex Zhou (Cheirolepidiaceae) 叶角质层超微结构
影响因子：
1.9
作者：
Yang, Xiao-Ju;Guignard, Gaetan;Barale, Georges
通讯作者：
Barale, Georges