河南汝阳含巨型蜥脚类恐龙动物群地层时代的孢粉学证据

Palynology evidence for the stratigraphic age of the giant sauropod dinosaur fauna in Ruyang of Henan province

河南汝阳等地区大量微体古生物样品分析,首次在原“蟒川组”发现大量保存完好的孢粉化石。通过对化石组合特征进行记述和对重要化石地质时代进行讨论,结果表明,该孢粉类群及其含量变化的组合特征与松辽盆地登楼库组、河南周口商水组孢粉化石特征相似,确定其时代为早白垩世Aptain期。孢粉学研究丰富了汝阳地区的地层古生物内容,为厘定赋存巨型蜥脚类恐龙动物群的地层时代提供了孢粉学证据。

A large number of micro paleontological samples were analyzed in Ruyang and other areas of Henan province,and for the first time,a large number of well-preserved spore and pollen fossils were found in the original"Mangchuan Formation".By describing the characteristics of fossil assemblages and discussing the geological ages of important fossils,the results show that the assemblage characteristics of this sporopollen group and its content changes are similar to the sporopollen fossil characteristics of the Denglouku Formation in the Songliao Basin and the Shangshui Formation in Zhoukou,Henan.It is determined that its age is the Early Cretaceous Aptain period.The study of palynology enriches the content of stratigraphy and paleontology in Ruyang area,and provides palynology evidence for determining the stratigraphic age of giant sauropod dinosaur fauna.