A Numerical Taxonomic Study of Actinobacillus, Pasterella and Yersinia Sneath, P. H. A. and Stevens, M.,, 131, 2711-2738 (1985), doi = https://doi.org/10.1099/00221287-131-10-2711, publicationName = Microbiology Society, issn = 1350-0872, abstract= Summary: A numerical taxonomic study of strains of Actinobacillus, Pasteurella and Yersinia, with some allied bacteria, showed 23 reasonably distinct groups. These fell into three major areas. Area A contained species of Actinobacillus and Pasteurella: A. suis, A. equuli, A. lignieresii, P. haemolytica biovar A. P. haemolytica biovar T, P. multocida, A. actinomycetemcomitans, ‘P. bettii’. ‘A. seminis’ P. ureae and P. aerogenes. Also included in A was a composite group of Pasteurella pneumotropica and P. gallinarum, together with unnamed groups referred to as ‘BLG’ ‘Mair’ ‘Ross’ and ‘aer-2’. Area B contained species of Yersinia: Y. enterocolitica, Y. pseudotuberculosis. Y. restis and a group ‘ent–b’ similar to Y. enterocolitica. Area C contained non–fermenting strains: Y. philomiragia, Moraxella anatipestifer and a miscellaneous group ‘past’. There were also a small number of unnamed single strains., language=, type=