CampylobacterotaCampylobacterota are a phylum of Gram-negative bacteria.TaxonomyUntil the 2021 revision of bacterial taxonomy by the ICSP, the entire phylum was classified within the Proteobacteria as the Epsilonproteobacteria and the Desulfurellales. The separation of this phylum from "Proteobacteria" was originally proposed in 2017, using GTDB-based methods.PhylogenyThe currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature and National Center for Biotechnology Information.