amphritea atlantica amphritea atlantica amphritea atlantica is a gram-negative, aerobic, rod-shaped and motile bacterium from the genus of amphritea which has been isolated from the mussel bathymodiolus from the logatchev hydrothermal vent field. amphritea atlantica scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: oceanospirillales family: oceanospirillaceae genus: amphritea species: a. atlantica binomial name amphritea atlanticagärtner et al. 2008 type strain dsm 18887, lmg 24143, m41