Dichotomous Key/Bacteria

Include the cyanobacteria (autotrophic) and eubacteria (heterotrophic).

• Acidobacteria (acidophilic, gram positive, high G+C, common in dirt)
• Actinobacteria (high G+C gram positive bacteria)
• Aquificae (hyperthermophilic chemolithoautotrophs, gram negative)
• Bacteroidetes (really diverse group with pathogens, commensals, and free-living bacteria; anaerobic, gram negative, rod shaped)
• Chlamydiae (obligate intracellular parasites of eukaryotic cells, gram negative)
• Chlorobi (anaerobic, photoautotrophic, gram negative green sulfur bacteria)
• Chloroflexi (greeen nonsulfur bacteria)
• Chrysiogenetes (chemolithoautotrophic bacterium)
• Cyanobacteria (oxygenic photosynthetic bacteria and chloroplasts)
• Deferribacteres (aquatic, anaerobic bacteria)
• Deinococcus-Thermus (extremophiles, gram negative)
• Dictyoglomi (thermophilic chemoorganotrophs)
• Fibrobacteres (cellulose digesting, anaerobic rumen bacteria, two species)
• Firmicutes (low G+C gram positives)
• Fusobacteria (obligate anaerobic heterotrophs, many involved in human infections, gram negative, non-spore forming)
• Gemmatimonadetes (Gram negative bacteria lacking DAP in cellular envelopes)
• Nitrospira (gram negative; includes nitrite-oxicizers, thermophilic sulfate reducers, and acidophilic iron reducers)
• Planctomycetes (ovoid gram negative bacteria, reproduce by budding)
• Proteobacteria (purple bacteria and relatives, gram negative)
• Spirochaetes (spiral-shaped chemoheterotrophs, gram negative)
• Synergistetes (gram negative, rod/vibroid cell shape)
• Tenericutes (gram positive, no cell wall)
• Thermodesulfobacteria (thermophilic, sulfate-reducing bacteria)
• Thermomicrobia (hyperthermophilic chemoheterotrophs)
• Thermotogae (hyperthermophilic, obligate anaerobic, fermentive heterotrophs)
• Verrucomicrobia (terrestrial, aquatic, some associated with eukaryotic hosts; gram negative)