1.【地】二叠纪的;二叠系的
1.二叠纪[系]
1.the period of geologic time, 290 million to 248 million years ago, when many marine invertebrates disappeared and reptiles flourished
1.And I worked on this Permian extinction, camping by this Boer graveyard for months at a time.
当时我在研究二叠纪生物灭绝事件，每次都在波尔的墓地露营好几个月。
2.in Permian, it had developed and formed a typical Cathaysian flora and was an important part of late Paleozoic Cathaysian flora.
二叠纪时已发展为典型的华夏植物区系的性质，是晚古生代华夏植物区系的重要组成部分。
3.Previously, the only dateable layers were from the moment the Permian ended and from a subsequent volcanic event some 14m years later.
在此之前唯一可以确定年代的地层是二叠纪结束的时刻，以及大约1400万年后的火山爆发事件。
4.This was the end of the Permian period, and of the era of life called the Paleozoic.
这就是二叠纪以及整个古生代的终结。
5.At the same time, the sedimentary and ecological environment suffers from a strong variation near the boundary of Permian and Triassic .
整个剖面沉积为一个海浸的过程，其二叠系-三叠系界线之交生态环境发生了很大的变迁。
6.This animal spread across the massive, ancient continent of Pangea after the end of the Permian Extinction.
这在大规模，古老的盘古大陆动物传播后二叠纪灭绝结束。
7.A few mixed elements of the two floras occurred in the region during the late Middle Permian.
来自这两个植物群的少数混生分子出现在本区的中二叠世晚期。
8.The end of the Permian period, 252m years ago, was marked by the biggest extinction of life known to have happened on Earth.
252百万年前的二叠纪晚期以已知的地球上发生过的最惨痛的生物灭绝事件著称。
9.The typical drowning event of the carbonate platforms at the turn from the Permian to the Triassic formed a typical drowned unconformity.
二叠系与三叠系之交发生的较为典型的台地淹没事件形成了一个较为典型的淹没不整合面。
10.It is considered that the Upper Paleosoic Permian-Triassic System is the main targeted for exploration and that. regionally.
认为上古生界二叠系—三叠系是主要的勘探目的层。