Cowdria Moshkovski 1947 emend. Philip 1974 (Approved Lists 1980) Cowdria ruminantium (Cowdry 1925) Moshkovski 1947 (Approved Lists 1980) Universal Root Woese et al. 1990 Bacteria (None 2015) Woese et al. 1990 Proteobacteria (sic) Garrity et al. 2021 Pseudomonadota corrig. Garrity et al. 2021 Alphaproteobacteriota (sic) Garrity et al. 2021 Alphaproteobacteria Garrity et al. 2006 Rickettsiales Gieszczykiewicz 1939 (Approved Lists 1980) emend. Dumler et al. 2001 Ehrlichiaceae Moshkovski 1945 (Approved Lists 1980) emend. Hördt et al. 2020 Cowdria Moshkovski 1947 emend. Philip 1974 (Approved Lists 1980) Ehrlichiaceae Moshkovski 1945 (Approved Lists 1980) emend. Hördt et al. 2020 Ehrlichia Moshkovski 1945 (Approved Lists 1980) emend. Dumler et al. 2001 Neorickettsia Philip et al. 1953 (Approved Lists 1980) emend. Dumler et al. 2001 Lyticum (ex Preer et al. 1974) Preer and Preer 1982 Aegyptianella Carpano 1929 (Approved Lists 1980) Wolbachia Hertig 1936 emend. Weiss 1974 (Approved Lists 1980) Cowdria ruminantium (Cowdry 1925) Moshkovski 1947 (Approved Lists 1980) Moshkovski S.D. Comments by readers 1947 106 2742 62 62 Science Magazine Science 0036-8075 1095-9203 10.1126/science.106.2742.62 17820731 Dumler J.S. Barbet A.F. Bekker C.P.J. Dasch G.A. Palmer G.H. Ray S.C. Rikihisa Y. Rurangirwa F.R. Reorganization of genera in the families Rickettsiaceae and Anaplasmataceae in the order Rickettsiales: unification of some species of Ehrlichia with Anaplasma, Cowdria with Ehrlichia and Ehrlichia with Neorickettsia, descriptions of six new species combinations and designation of Ehrlichia equi and 'HGE agent' as subjective synonyms of Ehrlichia phagocytophila. 2001 51 6 2145 2165 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/00207713-51-6-2145 11760958 Hördt A. García-López M. Meier-Kolthoff J.P. Tindall B.J. Weinhold L.-M. Gronow S. Kyrpides N. Woyke T. Schleuning M. Göker M. Analysis of 1,000+ Type-Strain Genomes Substantially Improves Taxonomic Classification of Alphaproteobacteria 2020 11 468 Frontiers in Microbiology Front. Microbio. 1664-302X 10.3389/fmicb.2020.00468 32373076 Ristic and Huxsoll 1984 originally placed Neorickettsia in the Ehrlichiaceae. This genus was transferred into the Anaplasmataceae by Dumler et al. 2001 and later transferred back to Ehrlichiaceae by Hördt et al. 2020.