methanosaeta concilii methanosaeta concilii methanosaeta concilii is an archaeum in the disputed genus methanosaeta. it is obligately anaerobic, gram-negative and non-motile. it is rod-shaped (length 2.5 to 6.0 μm) with flat ends. the cells are enclosed within a cross-striated sheath. the type strain is gp6 (= dsm 3671 = ogc 69 = nrc 2989 = atcc 35969). its genome has been sequenced. methanosaeta concilii scientific classification domain: archaea phylum: euryarchaeota class: methanomicrobia order: methanosarcinales family: methanosaetaceae genus: methanosaeta species: m. concilii binomial name methanosaeta concilii(patel 1985) patel & sprott 1990 synonyms methanothrix concilii patel 1985 methanothrix soehngenii huser, wuhrmann & zehnder 1983