Domain Bacteria Woese et al. 1990
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   Phylum Actinobacteria Garrity and Holt 2001
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     Class Actinobacteria Stackebrandt et al. 1997
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       Subclass Actinobacteridae Stackebrandt et al. 1997 see Class Actinobacteria Stackebrandt et al. 1997
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         Order Actinomycetales Buchanan 1917 (Approved Lists 1980)
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           Suborder Corynebacterineae Stackebrandt et al. 1997
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             1 Family Corynebacteriaceae Lehmann and Neumann 1907 (Approved Lists 1980)
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             2 Family Dietziaceae Rainey et al. 1997
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             3 Family Gordoniaceae Rainey et al. 1997 see Family Nocardiaceae Castellani and Chalmers 1919 (Approved Lists 1980)
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             4 Family Mycobacteriaceae Chester 1897 (Approved Lists 1980)
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             5 Family Nocardiaceae Castellani and Chalmers 1919 (Approved Lists 1980)
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             6 Family Tsukamurellaceae Rainey et al. 1997
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             7 Family "Williamsiaceae" see Family Nocardiaceae Castellani and Chalmers 1919 (Approved Lists 1980)
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