AcidimicrobiiaThe Acidimicrobiia are a class of Actinomycetota, in which three families, eight genera, and nine species have been described, Acidimicrobium ferrooxidans is the type species of the order.PhylogenyThe currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature and National Center for Biotechnology Information.Genera incertae sedis Acidimicrobiales* Acidithiomicrobium Davis-Belmar & Norris 2009* "Salinilacustritrichaceae" Gao et al. 2024** "Salinilacustrithrix" Gao et al. 2024* "Microtrichaceae"** "Candidatus Limnosphaera" Kim, Kang & Cho 2017