A Gram-stain-negative, rod-shaped bacterium, motile by means of a single polar flagellum, designated S-6-2, was isolated from petroleum polluted river sediment in Huangdao, Shandong Province, PR China. The 16S rRNA gene sequence analysis revealed that S-6-2 represented a member of the genus , sharing the highest sequence similarities with (97.5 %) and (97.5 %). Phylogenetic analysis based on 16S rRNA gene, concatenated 16S rRNA, , and genes and genome core-genes indicated that S-6-2 was affiliated with the members of the group. The average nucleotide identity (ANI) and genome-to-genome distance between the whole genome sequences of S-6-2 and closely related species of the genus within the