A new species of Discinites (Noeggerathiales) from the Upper Permian of Weibei Coalfield, North China

被引：1
|
作者：
Wang, J [1 ]
Shen, GL
机构：
[1] Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, Nanjing 210008, Peoples R China
[2] NW Univ Xian, Dept Geol, Xian 710069, Peoples R China
来源：
REVIEW OF PALAEOBOTANY AND PALYNOLOGY | 2000年 / 110卷 / 3-4期
关键词：
China; discinites; fructification; Late Permian; Noeggerathiales;
D O I：
暂无
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
A new species of Discinites is described from the Late Permian Upper Shihhotse Formation of the Weibei Coalfield, Shaanxi Province, China. D. hanchengensis sp. nov. has decurrent and disk-like sporophylls with deep-toothed apices, elliptical sporangia and rectangular epidermal cells. The spores are generally of the Calamospora type. The megaspores and microspores are 300-380 and 45-90 mu m in diameter, respectively. The microspores are similar in size to those of all other species of Discinites that contain Calamospora, but the megaspores are remarkably smaller. The new species represents the first record of Discinites with Calamospora from China and from the Cathaysian flora. Finally, we summarize the associated foliages of Discinites in the Cathaysian flora and find that they are all markedly different from those found in the Euramerican flora. (C) 2000 Elsevier Science B.V. All rights reserved.
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页码：175 / 190
页数：16
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