中侏罗世早期是全区重要的成煤期，下窑坡组为湖泊—三角洲及沼泽相。
The early Middle Jurassic was an major coal-forming period in the region, when the Lower Yaopo Formation of lacustrine-deltaic and swamp facies was deposited.
本文着重讨论燕山早期主体花岗岩，即中侏罗世三江口序列。
This paper mainly discusses early Yanshanian granites, namely, the Middle Jurassic Sanjiangkou sequence.
新的化石表明美蝎蛉的早期分异在中侏罗世就已存在。
The new material from China reveals that the early diversification of eomeropids with cockroach-like body was well underway by the Middle Jurassic.
中侏罗世至晚侏罗世早期经历了一次完整的海侵-海退旋回和一次海侵过程。
There existed a transgressive-regressive cycle and a transgressive cycle from the Middle Jurassic to the early period of Late Jurassic.
中侏罗世至晚侏罗世早期经历了一次完整的海侵-海退旋回和一次海侵过程。
There existed a transgressive-regressive cycle and a transgressive cycle from the Middle Jurassic to the early period of Late Jurassic.
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