论文部分内容阅读
二叠—三叠纪之交的无论生物的或非生物事件都是得到公认的。事件(1)最大的和众所周知的事件是在二叠—三叠系界线处,或在界线附近,存在着生物的交替,人们注意到界线处古
Permian-Triassic dating both biological and non-biological events have been recognized. Events (1) The largest and well-known event is the alternation of living beings at the Permian-Triassic boundary, or near the boundary, as people noticed