Distribution of 13 fimbrial types among G. anatis and G. genomospecies 1 and 2 strains in an evolutionary context. The tree presented in the left was constructed using concatenated sequences of 8 housekeeping genes present in 23 Gallibacterium genomes. There were a total of 4176 positions in the final dataset and 1000 bootstrap replicates were included. The evolutionary history was inferred by using the Maximum Likelihood method based on the Hasegawa-Kishino-Yano model in MEGA6. Light blue cells on the right represent the distribution of 13 fimbrial types determined based on fimbrial subunit phylogeny (FlfA-FlfA4) and presence/absence of CD’s in fimbrial clusters among the strains. Depending on the distribution of different fimbrial types the tree is divided into the blue and green branches, where strains at the ends of green branches maintain higher variation of fimbrial types.