marinobacter excellens marinobacter excellens marinobacter excellens is a gram-negative and halophilic bacterium from the genus of marinobacter which has been isolated from sediments from the chazhma bay from the sea of japan. marinobacter excellens scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: alteromonadales family: alteromonadaceae genus: marinobacter species: m. excellensgorshkova et al. 2003 binomial name marinobacter excellens type strain cip 107686, kmm 3809 synonyms marinobacter excelentus