新疆皮山杜瓦普司格组晚二叠世孢粉的发现

Notes on the discovery of Antiarchian from the Tarim Basin

新疆皮山杜瓦剖面普司格组中、上部含丰富的孢子花粉化石，并以双气囊花粉数量占优势为特征。Ｌｕｅｃｋｉｓｐｏｒｉｔｅｓｖｉｒｋｋｉａｅ、Ｔａｅｎｉａｅｓｐｏｒｉｔｅｓｓｐｐ．和Ｇａｒｄｅｎａｓｐｏｒｉｔｅｓｘｉｎｊｉａｎｇｅｎｓｉｓ等国内外晚二叠世典型分子在该组合内出现，表明普司格组的时代并非仅限于以往所普遍认为的早二叠世，亦应包括部分晚二叠世。结合对普司格组上覆和下伏地层的古生物群分析，普司格组的时代为早二叠世中期至晚二叠世中期。

On the basis of the discovery of Antiarchian,which was collected from a drilling about 6000m below ground level on the northern margin of the Tarim Basin,the lower part of the Bachu Formation,which may be correlated with the Donghe Sandstone,is regarded to be Late Devonian inage.So the age of the Donghe Sandstone should be Devonian also,not being of Early Carboniferous.