大羽羊齿煤系为我国古生代的主要产煤层位,煤储量占全国40%以上。大羽羊齿植物群又称华夏植物群,是我国特有的古生代植物群,早已为世界古植物学界所瞩目和涉足。前几年,我们研究了山西某些化石点的华夏植物群,并有新发现,其中以中国始苏铁(Pri-mocycas chinensis)最有意义,它证明了苏铁植物不是 The big feather-teeth coal-bearing system is the main coal-producing layer of the Paleozoic in China, accounting for over 40% of the country’s coal reserves. Big feather fern flora, also known as the Chinese flora, is an endemic Paleozoic flora in China, the world has long been palaeontological attention and involvement. A few years ago, we studied and made new discoveries on the Chinese flora of some fossil sites in Shanxi. Among them, the most significant is the Chinese Primocycas chinensis, which proves that the cycad is not