Read Edit View history 二叠系 èrdiéxì Permian System Origin Definitions Defs Strokes Stroke Words Sentences Sents Senses Add sense 二叠系/ 二疊系 èrdiéxì Permian System The sequence of rock layers deposited during the Permian Period; specifically the strata belonging to the late Paleozoic Era. Edit Delete References Add reference see 二叠系/二疊系 → 二叠纪/二疊紀 Edit Delete
二叠系/ 二疊系 èrdiéxì Permian System The sequence of rock layers deposited during the Permian Period; specifically the strata belonging to the late Paleozoic Era. Edit Delete