Phylogeny
The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN) and National Center for Biotechnology Information (NCBI) and the phylogeny is based on 16S rRNA-based LTP release 111 by 'The All-Species Living Tree' Project
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?T. calligyrum ♠
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?T. carateum ♥ (pinta causing Treponema)
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?T. minutum ♦
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| ?T. pallidum ♦ |
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T. p. endemicum ♠ (bejel causing Treponema)
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T. p. pallidum ♠ (syphilis causing Treponema)
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?T. paraluisleporis ♠
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?T. paraluiscuniculi ♦
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?T. pertenue ♦ (yaws causing Treponema)
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| ?T. phagedenis ♠ |
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T. p. phagedenis ♠
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T. p. vaccae ♠
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?T. refringens ♠
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?T. vincentii ♠
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?T. zioleckii ♠
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Spirochaeta caldaria
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Spirochaeta stenostrepta
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T. isoptericolens
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T. azotonutricium
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T. primitia
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Spirochaeta zuelzerae
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| T. medium |
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T. m. bovis ♠
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T. m. medium ♠
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T. lecithinolyticum
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T. maltophilum
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T. brennaborense
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T. saccharophilum
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T. berlinense
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T. pectinovorum
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T. bryantii
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T. porcinum
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T. succinifaciens
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T. parvum
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T. amylovorum
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| T. socranskii |
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T. s. paredis
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T. s. buccale
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T. s. socranskii
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Notes:
♦ Type strain lost or not available
♠ Strains found at the National Center for Biotechnology Information (NCBI) but not listed in the List of Prokaryotic names with Standing in Nomenclature (LSPN)
♥ Strains not lodged at National Center for Biotechnology Information (NCBI) or listed in the List of Prokaryotic names with Standing in Nomenclature (LPSN)