roseococcus thiosulfatophilus roseococcus thiosulfatophilus roseococcus thiosulfatophilus is a species of bacterium, the type species of its genus. roseococcus thiosulfatophilus scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: rhodospirillales family: acetobacteraceae genus: roseococcus species: r. thiosulfatophilus binomial name roseococcus thiosulfatophilusyurkov et al. 1994 description it is an obligately aerobic, bacteriochlorophyll a-containing bacteria.