Chlamydophila is a bacterial genus belonging to the family Chlamydiaceae, order Chlamydiales, class/phylum Chlamydiae. Chlamydophila was recognized in 1999, with six species in Chlamydophila and three in the original genus, Chlamydia. All Chlamydiae have a biphasic developmental lifecycle that depends on obligately intracellular growth in eukaryotic host cells. Prior to 1999, criteria for chlamydial species were not exclusive. For example, at that time genus Chlamydia = family Chlamydiaceae; C. psittaci...