dyadobacter psychrophilus dyadobacter psychrophilus dyadobacter psychrophilus is a gram-negative, aerobic and psychrophilic bacterium from the genus of dyadobacter which has been from soil which was contaminated with hydrocarbon in bozen in italy. dyadobacter psychrophilus scientific classification domain: bacteria phylum: bacteroidota class: cytophagia order: cytophagales family: spirosomaceae genus: dyadobacter species: d. psychrophilus binomial name dyadobacter psychrophiluszhang et al. 2010 type strain bz26, cgmcc 1.8951, cip 110129, dsm 22270