Methanocalculus Dataset NCBI Taxonomy Rank GENUS Classification phylum Euryarchaeota class Methanomicrobia order Methanomicrobiales family Methanocalculaceae genus Methanocalculus Name Synonyms Methanocalculus Ollivier et al. 1998 Homonyms Methanocalculus Methanocalculus Ollivier et al. 1998