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What you should know:

The Spirochateta  are Gram-negative free-living spiral bacteria that feature the same kind of axial filaments found in Treponema and Borrelia. Unlike its relatives, though, Spirochaeta are non-pathogenic. Spirochaetes can be found in fresh water habitats and extremely hot sulfurous environments.


Domain Bacteria

    Phylum Spirochaetes

        Class Spirochaetes

Bergey's Manual Volume 4: The Bacteroidetes, Spirochaetes, Tenericutes (Mollicutes), Acidobacteria, Fibrobacteres, Fusobacteria, Dictyoglomi, Gemmatimonadetes, Lentisphaerae, Verrucomicrobia, Chlamydiae, and Planctomycetes