Abundant ichthyoid remains, conodonts and holothurians sclerites were recovered near the Permian/Triassic boundary from ......

本文总结了孢粉、沟鞭藻等六个门类的化石在东濮凹陷下第三系地层纵向上各段的丰度,研究了沟鞭藻横向上的分布趋势,认为微古生物群......

渤海湾盆地沙河街组四段上亚段至东营组发育着丰富的、地方性色彩浓烈的微体古生物群——Chinocythere—Bohaidina生物群。根据特......