Crossword clue: considered ancient life forms that evolved separately from bacteria and blue-green algae

archaebacteria, archaebacterium.

The most common answer is archaebacteria (14 letters).

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

Possible answers

archaebacteria 14 letters wn-def

considered ancient life forms that evolved separately from bacteria and blue-green algae

archaebacterium 15 letters wn-def

considered ancient life forms that evolved separately from bacteria and blue-green algae