The test of glycerol diether analog suggested that 3 archaean halophiles contained typical glycerol diether analog. 对细胞壁的甘油二醚衍生物测定显示，3株嗜盐古细菌均含有典型的甘油二醚类衍生物。
Archaean cell walls lack murein, a common component of bacterial cell walls, and their lipids have ether links rather than ester links. 古细菌的细胞壁缺乏细菌细胞壁组成的普遍物质-胞壁质，其连接是醚连接而不是酯连接。
So, basically, the animal kingdom is much newer than the archaean kingdom.
所以，动物比古生菌出现的晚。
科学60秒-科学美国人 2021年4月合集
The tentacled Archaean uses proteins common to multicellular organisms and might lend insight into how the latter evolved.
这种有触角的太古代微生物使用多细胞生物共有的蛋白质，这可能有助于我们了解后者进化的方式。
Journeys Through Geologic Time
It existed 2.7 to 2.5 billion years ago, toward the very end of the Archaean Eon.
它存在于 2.7 到 25 亿年前， 接近太古宙末期。
万物简史
The bacterial realm, Mayr notes, consists of no more than a few thousand species while the archaean has a mere 175 named specimens, with perhaps a few thousand more to be found-but hardly more than that.