内蒙古阿鲁科尔沁旗林西组植物化石新材料

NEW FOSSIL MATERIALS OF LATE PERMIAN PLANTS FROM LINXI FORMATION IN AR HORQIN QI,INNER MONGOLIA

在内蒙古阿鲁科尔沁旗坤都地区上二叠统林西组地层中采集到的几种植物化石,主要为Pecopteris(Asterotheca?)cyatheca(Schloch.)Brongn.、Pecopteris unita Brongniart、Peltaspermum buevichae Gomankov et Meyen,为林西组植物化石增添新材料,特别是Peltaspermum buevichae Gomankov et Meyen为东北和内蒙古地区首次发现.植物化石指示其时代为晚二叠世.

A few species of plant fossils were collected from the Upper Permian Linxi Formation in Kundu area, Ar Horqin Qi, Inner Mongolia, including Pecopteris （Asterotheca？） cyatheca （Schloch.） and Pecopteris unita Brongniart of the Monilophytes, Peltaspermum buevichae Gomankov et Meyen of Pteridosperm, which add new materials to the fossil plantation of the Linxi Formation. Particularly, the Peltaspermum buevichae Gomankov et Meyen were found in Northeast China and Inner Mongolia for the first time. The discovery of these fossils indicates that the age of the strata belongs to Late Permain.