| fusobacterium nucleatum subsp. nucleatum | subspecies | bacteria | bacteria | subspecies | 76856 |
| fusobacterium nucleatum subsp. nucleatum atcc 23726 | no rank | bacteria | bacteria | no rank | 525283 |
| fusobacterium nucleatum subsp. nucleatum atcc 25586 | no rank | bacteria | bacteria | no rank | 190304 |
| fusobacterium nucleatum subsp. nucleatum chdc f316 | no rank | | | no rank | 1307428 |