Methanogenium bourgense Dataset NCBI Taxonomy Classification kingdom Methanobacteriati phylum Methanobacteriota class Methanomicrobia order Methanomicrobiales family Methanomicrobiaceae genus Methanoculleus species Methanoculleus bourgensis Name Homonyms Methanogenium bourgense Methanogenium bourgense Ollivier et al. 1986