curvibacter curvibacter curvibacter is a genus of comamonad bacteria. curvibacter scientific classification domain: bacteria phylum: pseudomonadota class: betaproteobacteria order: burkholderiales family: comamonadaceae genus: curvibacterding and yokota 2004 type species curvibacter gracilis species c. delicatus c. fontanus c. gracilis c. lanceolatus