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词汇 Permian system
分类 英语词汇 英语翻译词典
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Permian system

英语百科

Permian

Geography of the Permian world
Selwyn Rock, South Australia - an exhumed glacial pavement of Permian age
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.

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