bartonella taylorii bartonella taylorii bartonella taylorii is a bacterium. as with other bartonella species, it can cause disease in animals. bartonella taylorii scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: hyphomicrobiales family: bartonellaceae genus: bartonella species: b. taylorii binomial name bartonella taylorii(birtles et al. 1995)