Protochlamydia naegleriophila (sic) Casson et al. 2008 Protochlamydia naegleriiphila corrig. Casson et al. 2008 Protochlamydia naegleriophila (sic) Casson et al. 2008 Universal Root Woese et al. 1990 Bacteria (None 2015) Woese et al. 1990 Chlamydiota corrig. Garrity and Holt 2021 Chlamydiae (sic) Garrity and Holt 2021 non Chlamydiae Cavalier-Smith 2002 Chlamydiia (Cavalier-Smith 2002) Horn 2016 emend. Gupta et al. 2015 Parachlamydiales Gupta et al. 2016 Parachlamydiaceae Everett et al. 1999 Protochlamydia Horn 2010 Protochlamydia naegleriiphila corrig. Casson et al. 2008 Protochlamydia naegleriophila (sic) Casson et al. 2008 Protochlamydia Horn 2010 Protochlamydia amoebophila Horn 2010 Protochlamydia naegleriiphila corrig. Casson et al. 2008 Protochlamydia naegleriophila (sic) Casson et al. 2008 Casson N. Michel R. Müller K.-D. Aubert J.D. Greub G. Protochlamydia naegleriophila as Etiologic Agent of Pneumonia 2008 14 1 168 172 Emerging Infectious Diseases Emerg Infect Dis 1080-6040 1080-6059 Casson N. Michel R. Müller K.-D. Aubert J.D. Greub G. Protochlamydia naegleriophila as Etiologic Agent of Pneumonia 2008 14 1 168 172 Emerging Infectious Diseases Emerg Infect Dis 1080-6040 1080-6059 Casson N. Michel R. Müller K.-D. Aubert J.D. Greub G. Protochlamydia naegleriophila as Etiologic Agent of Pneumonia 2008 14 1 168 172 Emerging Infectious Diseases Emerg Infect Dis 1080-6040 1080-6059 Oren A. Garrity G.M. Candidatus List No. 2. Lists of names of prokaryotic Candidatus taxa. 2021 71 4 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijsem.0.004671 33881984 Casson et al. 2008 provided no formal protologue.