Where does “архебактерия” come from?

архебактерия (Russian) comes from Ancient Greek ἀρχαῖος, from Ancient Greek ἀρχή, from Ancient Greek ἄρχω, from Proto-Indo-European h₂ergʰ- — to begin; to command, rule; to begin, rule,...

Ancestry of “архебактерия”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	ἀρχαῖος	Pertaining to the beginning; ancient, primeval
2	Ancient Greek	ἀρχή	beginning, origin; sovereignty, dominion,...
3	Ancient Greek	ἄρχω	To begin; To lead, rule, govern, command; To be...
4	Proto-Indo-European	h₂ergʰ-	to begin; to command, rule; to begin, rule,...

Every word from Proto-Indo-European h₂ergʰ- →Every word from Ancient Greek ἄρχω →Every word from Ancient Greek ἀρχή →