Permian period

同根派生

At the end of the Permian period 225m years ago, between 80 % and 96 % of all living marine species were extinguished.
2.;25億年前的二疊紀(jì)末期，當(dāng)時80%25到96%25的海洋物種滅絕；
Any of various large, segmented aquatic arthropods of the order Eurypterida that existed from the Ordovician Period to the Permian Period.
（古生）板足鱟目的一種巨大的、有節(jié)的，屬于板足鱟目的水生節(jié)肢動物，生存于奧陶紀(jì)到二疊紀(jì)時期
At the end of the Permian period the earth's landmasses were configured into one supercontinent, Pangea, and a superocean, Panthalassa.
二疊紀(jì)末期，地球上的陸地合并成一塊超級大洲，叫作盤古大陸，以及一個超級大海，叫作原始大洋。
Ore deposits which have economical value mainly are depositional type and volcanegenic type produced in the permian period and tertiary period.
具經(jīng)濟(jì)價值的主要為產(chǎn)于二疊紀(jì)及第三紀(jì)沉積類及火山沉積類礦床。
The hydrothermal fluid and the spaces of ore-bodies in the deposit are provided by the granite magmas and the Permian period.
指出印支期白崗質(zhì)花崗巖巖漿提供部分成礦物質(zhì),二疊系地層和花崗巖浸位提供熱源和導(dǎo)礦、容礦空間。