anaerococcus murdochii anaerococcus murdochii anaerococcus murdochii is a bacterium from the family peptoniphilaceae. a. murdochii has been reported from skin and wound infections. resistance or reduced susceptibility to several antibiotics, such as colistin sulphate, clindamycin and kanamycin a or penicillin has been reported. anaerococcus murdochii scientific classification domain: bacteria phylum: bacillota class: clostridia order: eubacteriales family: peptoniphilaceae genus: anaerococcus species: a. murdochii binomial name anaerococcus murdochiisong et al. 2010 synonyms anaerococcus murdochii