Read Edit View history 二迭纪 èrdiéjì Permian Origin Definitions Defs Strokes Stroke Words Sentences Sents 二迭纪 二迭紀 èrdiéjì Permian (geology) the Permian period, approximately 299 to 251 million years ago Cross-References Variant of 二叠纪 èrdiéjì
二迭纪 二迭紀 èrdiéjì Permian (geology) the Permian period, approximately 299 to 251 million years ago Cross-References Variant of 二叠纪 èrdiéjì