BioConcepts

ArchaebacteriaArchaebakterien (ger.)

• A taxon comprising the archaebacteria; (also archaea) organisms of this taxon (collectively or individually), archaebacteria. (OED 2012)
  category bacterium

  1977

  The apparent antiquity of the methanogenic phenotype plus the fact that it seems well suited to the type of environment presumed to exist on earth 3-4 billion years ago lead us tentatively to name this urkingdom the archaebacteria.

  Woese, C.R. & Fox, G.E. (1977). Phylogenetic structure of the prokaryotic domain: the primary kingdoms. Proc. Natl. Acad. Sci. U.S.A. 74, 5088-5090: 5089.

  1982

  archaebacteria One of the three primary kingdoms (urkingdoms q.v.) of living organisms, comprising all methanogenic bacteria; cf. eubacteria, urkaryote.

  Lincoln, R.J., Boxshall, G.A. & Clark, P.F. (1982). A Dictionary of Ecology, Evolution and Systematics: 20.