Candidatus Helicobacter heilmannii Dataset NCBI Taxonomy Classification phylum Campylobacterota class Epsilonproteobacteria order Campylobacterales family Helicobacteraceae genus Helicobacter species Helicobacter heilmannii Name Homonyms Candidatus Helicobacter heilmannii "Candidatus Helicobacter heilmannii" O'Rourke et al. 2004