organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020] Kingdom Monera Haeckel 1866 see Domain Bacteria Woese et al. 1990 Phylum "chemoautotrophic bacteria" Class "oxidizers of sulfur compounds" see Order Thiotrichales Genus Thiospira Visloukh 1914 (Approved Lists 1980)