Methanomicrobiaceae

Methanogenium frigidum

Methanogenium frigidum

Methanogenium marinum

Methanogenium marinum

Methanogenium organophilum

Methanogenium organophilum

Methanolacinia paynteri

Methanolacinia paynteri

Methanomicrobium mobile

Methanomicrobium mobile

Methanoplanus endosymbiosus

Methanoplanus endosymbiosus

Methanoplanus limicola

Methanoplanus limicola