necropsobacter necropsobacter necropsobacter is a gram-negative and non-motile genus of bacteria from the family of pasteurellaceae. necropsobacter scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: pasteurellales family: pasteurellaceae genus: necropsobacterchristensen et al. 2011 type species necropsobacter rosorum species n. massiliensis n. rosorum