Each evolutionary and historical epoch has been associated with a specific stage of individual cognitive development together with correlative socially shared worldviews and moralities .
每一个演化和历史时期都和特定的人类认知发展阶段以及相应的社会共有的世界观和道德联系在一起。
The preceding palaeocene epoch was also brought to an end , the rocks suggest , by a sudden release of methane .
