原文标题为“How chemical clues from prehistoric microbes rewrote the story of one of Earth’s biggest mass extinctions”,于2020年11月17日首发于The Conversation,原文链接:https://theconversation.com/how-chemical-clues-from-prehistoric-microbes-rewrote-the-story-of-one-of-earths-biggest-mass-extinctions-150170,文章基于CC协议翻译,中文内容有编辑修改,仅供参考,一切内容以原文为准。