"Candidatus Methanohalarchaeum" Sorokin et al. 2018 Dataset NCBI Taxonomy Classification phylum Euryarchaeota class Methanonatronarchaeia order Methanonatronarchaeales family Methanonatronarchaeaceae genus Methanohalarchaeum Name Homonyms "Candidatus Methanohalarchaeum" Sorokin et al. 2018 Candidatus Methanohalarchaeum