| helicobacter ailurogastricus | species | | | species | 1578720 |
| helicobacter baculiformis | species | bacteria | bacteria | species | 427351 |
| helicobacter bizzozeronii | species | bacteria | bacteria | species | 56877 |
| helicobacter canis | species | bacteria | bacteria | species | 29419 |
| helicobacter felis | species | bacteria | bacteria | species | 214 |
| helicobacter felis atcc 49179 | no rank | bacteria | bacteria | no rank | 936155 |
| helicobacter heilmannii | species | bacteria | bacteria | species | 35817 |
| helicobacter pylori | species | bacteria | bacteria | species | 210 |
| helicobacter salomonis | species | bacteria | bacteria | species | 56878 |
| helicobacter sp. 'feline isolate' | no rank | bacteria | bacteria | species | 93505 |