Permian wood from inner Mongolia, north China: with special reference to Palaeozoic climate change of north China block
Permian wood from inner Mongolia, north China: with special reference to Palaeozoic climate change of north China block
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DOI：
10.54991/jop.2000.154
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发表时间：
2000-12
期刊：
影响因子：
--
通讯作者：
W. Jun
中科院分区：
文献类型：
--
作者：
W. Jun
本文报道了内蒙古石盒子组上段的裸子植物林三种。华北其中两个被描述为新的。也就是说，内蒙古南洋杉（Araucarioxylon neimongense sp. nov.）和武德南洋杉（Araucarioxylon wudense sp. nov.）这是因为它们的部分双列木质部射线的百分比高。根据Pant和Singh（1987）关于南洋杉类化石木分类的建议，对华夏诺拉古生代南洋杉类裸子植物化石木进行了重新评价。它们在Protophyllocladoxylon、Araucarioxylon、Zalesskioxylon、Chapmanoxylon和Cordaioxylon内重组。年轮的有无及其垂直分布格局与华北地块在晚古生代由热带向中高纬漂移所引起的古气候条件的变化密切相关。
Three species or gymnosperm woods are discovered from the upper Shihhotse Formation of Inner Mongolia. North China. of which two are described as new. i.e., Araucarioxylon neimongense sp. nov. and Araucarioxylon wudense sp. nov., because of their high percentage of partly biseriate xylem rays. In accordance with Pant and Singh's (1987) suggestion on the taxonomy and classification of araucaroid fossil wood, the Palaeozoic gymnosperm fossil woods of araucaroid type in Cathaysian nora are re-evaluated. They are recombined within Protophyllocladoxylon, Araucarioxylon, Zalesskioxylon, Chapmanoxylon and Cordaioxylon. The presence or absence of growth rings and their vertical distribution pattern were closely related to the change or the palaeoclimatic condition resulted from the drifting of the North China Block rrom the tropical zone to the middle-high latitude zone throughout the late Palaeozoic.