thiomonas islandica thiomonas islandica thiomonas islandica is a gram-negative, rod-shaped, motile bacterium from the genus thiomonas, which has the ability to oxidise sulfur compounds and hydrogen. it was isolated from a hot spring in graendalur in southwestern iceland. thiomonas islandica scientific classification domain: bacteria phylum: pseudomonadota class: betaproteobacteria order: burkholderiales family: comamonadaceae genus: thiomonas species: t. islandica binomial name thiomonas islandicavésteinsdóttir et al. 2011 type strain 6c, dsm 21436, jcm 16107