The Magnetococcales were an order of Alphaproteobacteria,[3] but now the mitochondria are considered as sister to the alphaproteobactera, together forming the sister the marineproteo1 group, together forming the sister to Magnetococcidae.[4][5][6][7]
^Bazylinski DA, Williams TJ, Lefevre CT, Berg RJ, Zhang CL, Bowser SS, Dean AJ, Beveridge TJ (2013). "Magnetococcus marinus gen. nov., sp. nov., a marine, magnetotactic bacterium that represents a novel lineage (Magnetococcaceae fam. nov., Magnetococcales ord. nov.) at the base of the Alphaproteobacteria". Int J Syst Evol Microbiol. 63 (Pt 3): 801–808. doi:10.1099/ijs.0.038927-0. PMID22581902.
^Esposti MD, Geiger O, Sanchez-Flores A (2022-05-16). "On the bacterial ancestry of mitochondria: new insights with triangulated approaches". bioRxiv: 2022.05.15.491939. doi:10.1101/2022.05.15.491939. S2CID248836055.