parabacteroides gordonii parabacteroides gordonii parabacteroides gordonii is a gram-negative, non-spore-forming, rod-shaped and non-motile bacterium from the genus of parabacteroides which has been isolated from human blood. parabacteroides gordonii scientific classification domain: bacteria phylum: bacteroidota class: bacteroidia order: bacteroidales family: "tannerellaceae" genus: parabacteroides species: p. gordonii binomial name parabacteroides gordoniisakamoto et al. 2009 type strain ccug 57478, dsm 23371, jcm 15724, jcm 15725, jcm 15726