cloacibacterium cloacibacterium cloacibacterium normanense is a bacterium originally found in wastewater in norman, oklahoma. it is gram-negative, non-motile, and facultatively anaerobic. physically, it is a rod-shaped organism with yellow pigmentation. cloacibacterium scientific classification domain: bacteria phylum: bacteroidota class: flavobacteriia order: flavobacteriales family: weeksellaceae genus: cloacibacteriumallen et al. 2006 type species cloacibacterium normanense species c. haliotis c. normanense c. rupense this organism was discovered using a non-selective medium, as opposed to the traditional selective media often used to isolate microorganisms. in this case, the method involved diluting raw sewage.