thermonema rossianum thermonema rossianum thermonema rossianum is a thermophilic and halophilic bacterium from the genus of thermonema which has been isolated from a saline hot springs in from the bay of naples in italy. thermonema rossianum scientific classification domain: bacteria phylum: bacteroidota class: cytophagia order: cytophagales family: thermonemataceae genus: thermonema species: t. rossianum binomial name thermonema rossianumnobre et al. 1997 (complete authorship reads: nobre, rainey and da costa) type strain dsm 10300, nr-27