[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020] Domain Bacteria Woese et al. 1990 stat. inval. see Domain Bacteria Woese et al. 2024 Phylum "Proteobacteria" Garrity et al. 2005 stat. inval. see Phylum Pseudomonadota Garrity et al. 2021 Class Deltaproteobacteria Kuever et al. 2006 Order Desulfobacterales Kuever et al. 2006 Family Nitrospinaceae Garrity et al. 2006 Genus Nitrospina Watson and Waterbury 1971 (Approved Lists 1980) 1 Nitrospina gracilis Watson and Waterbury 1971 (Approved Lists 1980)