Permian

Hercosestria cribrosa, a reef-forming productid brachiopod (Middle Permian, Glass Mountains, Texas).

The Permian–Triassic extinction event, labeled

The Permian is a geologic period and system which extends from 298.9 to 252.17 million years ago. It is the last period of the Paleozoic, following the Carboniferous and preceding the Triassic of the Mesozoic. The concept of the Permian was introduced in 1841 by geologist Sir Roderick Murchison, who named it after the ancient kingdom of Permia.

单词	Lower Permian
释义	Lower Permian 英语例句库 The secondary dolomite and paleokarst of the Lower Permian Series in Sichuan Basin is one of the important atectonic reserviors in the basin. 四川盆地下二叠统中次生白云岩及古岩溶是下二叠统主要的非构造圈闭储层之一。英语百科 Permian The Permian is a geologic period and system which extends from 298.9 to 252.17 million years ago. It is the last period of the Paleozoic, following the Carboniferous and preceding the Triassic of the Mesozoic. The concept of the Permian was introduced in 1841 by geologist Sir Roderick Murchison, who named it after the ancient kingdom of Permia.
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Lower Permian

Permian