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描述了产于内蒙古乌达地区下二叠统山西组的东方拟楔羊齿ParasphenopterisorientalisSun&Deng(新属新种)。该植物以末二次羽片基部着生有“托叶”为特征,区别于晚古生代其他已知植物。
Describes Parasphenopteris orientalisun & Deng (a new genus) produced in the Lower Permian Shanxi Formation in Wuda, Inner Mongolia. The plant is characterized by “stipules” at the base of the last two plumes and is distinguished from other known plants of the Late Paleozoic.