鄂西早侏罗世几种植物化石及植物与含煤性的关系

SOME FOSSIL PLANTS FROM EARLY JURASSIC IN WESTERN HUBEI WITH THE RELATIVE PROBLEM BETWEEN FOSSIL PLANTS AND COAL-BEARING

本文报道了首次发现于鄂西香溪组4种植物化石,即壮观锥叶蕨(新种)Coniopterismagnifica(sp.nov.)、陈垸梳羽叶(新种) Ctenophyllum chenyuanense(sp.nov.)、疏叶梳羽叶(新种) C.laxilobum(sp.nov.)、大坑奇脉叶 Mironeura dakengensis Zhou。讨论了鄂西香溪组植物群的性质。并依据植物群含一些时代较老的分子,提出了香溪组的时代属早侏罗世。此外,文中对华南中生代煤系地层的含煤性与植物的关系也作了初步的探讨。

Coniopteris magnifica sp.nov.,Ctenophyllum chenyuanense sp.nov.,C. laxilobum sp.nov.,Mironeura dakengensis Zhou,are derived from the Xiangxi Formation (s.s.),Western Hubei.According to the aspect and characteristic of the Xiangxi flora,au- thor considers the Xiangxi Formation as Early Jurassic in age.In this paper,the relative problem between the coal-bearing and the fossil plants is briefly discussed also.