Campylobacter pylori subsp. pylori Dataset NCBI Taxonomy Classification phylum Campylobacterota class Epsilonproteobacteria order Campylobacterales family Helicobacteraceae genus Helicobacter species Helicobacter pylori Name Homonyms Campylobacter pylori subsp. pylori Campylobacter pylori subsp. pylori Marshall et al. 1985