Proteobacteria Gray and Herwig 1996 Dataset English Wikipedia - Species Pages Classification phylum Pseudomonadota Name Homonyms Proteobacteria Cavalier-Smith 2002 Proteobacteria Garrity et al. 2005 Proteobacteria Gray and Herwig 1996 Proteobacteria Stackebrandt et al. 1988 Proteobacteria