oribacterium sinus oribacterium sinus oribacterium sinus is an anaerobic bacterium from the genus of oribacterium which has been isolated from the maxillary sinus of a human in nancy in france. oribacterium sinus scientific classification domain: bacteria phylum: bacillota class: clostridia order: eubacteriales family: lachnospiraceae genus: oribacterium species: o. sinus binomial name oribacterium sinuscarlier et al. 2004 type strain ccug 48084, cip 107991, aip 354.02