Based on new materials, author thinks that Plagiozmites may be a primitive cycads, and may does be the Procycads; Compsopteris, at least the species found in China, is not belong to the seed fern plant, but also belong to the marattiaceae plant of fern.
首次报导了斜羽叶，蕉羊齿的内部解剖特征，根据新的材料，提出斜羽叶为原始的苏铁类植物，很可能为始苏铁；蕉羊齿，至少是中国发现的一些种，不是种子蕨植物，而是真蕨类的观音座莲科植物。
There are also five surviving timber structures whose history goes back to Tang and Song and a large number of stone columns with carved designs of lotus flowers and coloured paving tiles. lower ferns coextensive with the family Marattiaceae.
莫高窟区域内，还有唐、宋时期的木结构建筑5座，莲花柱石和铺地花砖数千块。与观音座莲科同延的低等蕨类植物。
Type genus of the Marattiaceae: ferns having the sporangia fused together in two rows.
马蹄蕨科的模式属；孢子囊排成两列的蕨类植物。
Eusporangiate ferns of the families Ophioglossaceae and Marattiaceae.
属于瓶尔小草科和合囊蕨科的厚囊蕨。