Microbiology Demystified

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Fig. 9-3.

Microbiologists use a microbial taxonomy.

α-Proteobacteria

β-Proteobacteria

γ-Proteobacteria

Proteobacteria

Bacteria

DomainPhylumClass Order

δ-Proteobacteria

ε-Proteobacteria

Chromatiales

Thiotrichales

Genus

Enterobacter Escherichia

Klebsiella

Proteus

Salmonella

Serratia

Shigella

Yersinia

Legionellales

Pseudomonadales

Vibrionales

Pasteurellale

s

Enterobacteriales

Family

Enterobacteriaceae

Species

S. boydii

S. dysenteriae

S. flexneri

S. sonnei