sphingomonas molluscorum sphingomonas molluscorum sphingomonas molluscorum is a gram-negative, aerobic and non-motile bacteria from the genus of sphingomonas which has been isolated from the mollusc anadara broughtonii in the peter the great bay in russia. sphingomonas molluscorum scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: sphingomonadales family: sphingomonadaceae genus: sphingomonas binomial name sphingomonas molluscorumromanenko et al. 2007 type strain cip 109223, jcm 14122, kmm 3882, nric 0685, an 18