山西、山东太原组煤核中的科达植物及其生活环境

Cordaites in Coal Ball of Taiyuan Formation of Shanxi and Shandong Provinces and Their Living Environment

山西太原西山煤田太原组7号煤层及山东陶枣煤田、兖州煤田太原组16号煤层的煤核中,保存有内部解剖构造的科达植物化石。通过研究建立了四个器官组合,其中山西煤核中三个:Shanxioxylon sinense ass.Sh.taiyuanense ass.、以及Pennsylvanioxylon tianii ass.;山东煤核中目前只有一个:Pennsylvanioxyloncf.nauertianum ass.。并根据古地磁及古地理资料,结合植物生态学和沉积环境分析等方法,讨论并恢复了上述四种科达植物的生活环境。

This paper conducts a study on cordaites preserved the inner structure in coal ball of coal seam No.7 from Taozao and Yanzhou coal fields, Shandong province. Four organ assemblages of cordaites are established. Three assemblages of those named Shanxioxylon sinense, Sh.taiyuanense and Pehnsylvanioxylon tianii respectively are preserved in Shanxi coal balls, the rest called Pennsylvanipxylon cf. nauertianum ass. in Shandong coal balls. The climate and environment in which the cordaites lived are discussed based on the data from Palaeomagnetism and Palaeogeography as well as the methods of plant ecology and environment analysis.