Are anoxyic bacteria that don't use oxygen at all (and find it quite toxic) unrelated at all to aerobic bacteria? Not according to anybody I have ever read on the subject.
Citation please, and can you address the universal DNA code and variants of the same ubiquitous “housekeeping” genes that are present with variation in ALL living species found upon the Earth?
“Archaea are members of the domain Prokarya and are in a kingdom of their own: Archaea” - first summary point of Link:
http://plantphys.info/organismal/lechtml/archaea.shtml
Where I tend to differ in my thinking from what is illustrated at the link - is that there was one “original cell.”
In any case it cleary shows that archaebacteria are very different - and deserve their own Kingdom of life.