brucella pinnipedialis brucella pinnipedialis brucella pinnipedialis (heterotypic synonym "brucella pinnipediae" cloeckaert et al. 2001) is a species of bacteria. it causes infections and related diseases primarily in pinnipeds and cetaceans. brucella pinnipedialis scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: hyphomicrobiales family: brucellaceae genus: brucella species: b. pinnipedialisfoster et al. 2007 binomial name brucella pinnipedialis