Order Chlamydiales Storz and Page 1971 (Approved Lists 1980) 1.1.1.1.1.1.1 Chlamydophila abortus Everett et al. 1999 1.1.1.1.1.1.2 Chlamydophila psittaci (Lillie 1930) Everett et al. 1999 1.1.1.1.1.2 Chlamydophila caviae Everett et al. 1999 1.1.1.1.2 Chlamydophila felis Everett et al. 1999 1.1.1.2 Chlamydophila pecorum (Fukushi and Hirai 1992) Everett et al. 1999 1.1.2 Chlamydophila pneumoniae (Grayston et al. 1989) Everett et al. 1999 1.2.1.1 Chlamydia trachomatis (Busacca 1935) Rake 1957 (Approved Lists 1980) 1.2.1.2 Chlamydia muridarum Everett et al. 1999 1.2.2 Chlamydia suis Everett et al. 1999 2.1 Simkania negevensis Everett et al. 1999 2.2.1 Waddlia chondrophila Rurangirwa et al. 1999 2.2.2.1 Parachlamydia acanthamoebae Everett et al. 1999 2.2.2.2 Genus Neochlamydia Horn et al. 2000 nom. inval. see Genus Neochlamydia Horn et al. 2001 nom. inval.