Natura - nature actualia - actual entities Mundus Plinius - physical world naturalia - natural bodies Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020] Domain Bacteria Woese et al. 2024 Kingdom Pseudomonadati (Gibbons and Murray 1978) Oren and Göker 2024 Phylum Pseudomonadotaᵀ Garrity et al. 2021 Class Alphaproteobacteria Garrity et al. 2006 Order Rickettsiales Gieszczykiewicz 1939 (Approved Lists 1980) [Family Anaplasmataceae Philip 1957 (Approved Lists 1980)] see Family Ehrlichiaceae Moshkovski 1945 (Approved Lists 1980) [Genus Cowdria Moshkovski 1947 (Approved Lists 1980)] see Genus Ehrlichia Moshkovski 1945 (Approved Lists 1980) 1 [Cowdria ruminantiumᵀ (Cowdry 1925) Moshkovski 1947 (Approved Lists 1980)] see Ehrlichia ruminantium (Cowdry 1925) Dumler et al. 2001