Silvanigrella Hahn et al. 2017 Silvanigrella aquatica Hahn et al. 2017 Universal Root Woese et al. 1990 Bacteria (None 2015) Woese et al. 1990 Bdellovibrionota Waite et al. 2021 Oligoflexia Nakai et al. 2014 emend. Waite et al. 2020 Silvanigrellales Hahn et al. 2017 Silvanigrellaceae Hahn et al. 2017 Silvanigrella Hahn et al. 2017 Silvanigrellaceae Hahn et al. 2017 Fluviispira Pitt et al. 2020 Silvanigrella aquatica Hahn et al. 2017 Silvanigrella paludirubra Pitt et al. 2020 Pitt A. Koll U. Schmidt J. Hahn M.W. Fluviispira multicolorata gen. nov., sp. nov. and Silvanigrella paludirubra sp. nov., isolated from freshwater habitats. 2020 70 3 1630 1638 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijsem.0.003947 31904321 Hahn M.W. Schmidt J. Koll U. Rohde M. Verbarg S. Pitt A. Nakai R. Naganuma T. Lang E. Silvanigrella aquatica gen. nov., sp. nov., isolated from a freshwater lake, description of Silvanigrellaceae fam. nov. and Silvanigrellales ord. nov., reclassification of the order Bdellovibrionales in the class Oligoflexia, reclassification of the families Bacteriovoracaceae and Halobacteriovoraceae in the new order Bacteriovoracales ord. nov., and reclassification of the family Pseudobacteriovoracaceae in the order Oligoflexales 2017 67 8 2555 2568 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijsem.0.001965 28771119