thalassococcus thalassococcus thalassococcus is a genus of bacteria from the family of rhodobacteraceae. thalassococcus scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: rhodobacterales family: rhodobacteraceae genus: thalassococcuslee et al. 2007 type species thalassococcus halodurans species t. halodurans t. lentus