cryobacterium aureum cryobacterium aureum cryobacterium aureum is a gram-positive, psychrophilic and rod-shaped bacterium from the genus cryobacterium which has been isolated from glacier ice in china. cryobacterium aureum scientific classification domain: bacteria phylum: actinomycetota class: actinomycetia order: micrococcales family: microbacteriaceae genus: cryobacterium species: c. aureum binomial name cryobacterium aureumliu et al. 2018 type strain cgmcc 1.11213hh31nbrc 107882 characteristics the name cryobacterium aureum has been given on account of the bacteria being capable of survival at low temperatures (in this case, preferentially 8–14 °c) with colonies appearing with a gold or canary yellow colour, similar to the naming of staphylococcus aureus. cryobacterium aureum cells are motile, aerobic and approximately 0.9–1.6×0.4–0.6 µm in size.