Biota (Life)
Prokaryotes (Prokaryota)
Bacteria (Bacterium)
Negibacteria (Rjheekñndd)
Proteobacteria (Purple bacteria & relatives)
Gammaproteobacteria
Enterobacterales (Enterobacteriales)
Enterobacteriaceae (P. flectens)
Yersinia
Yersinia pestis (Pasteurella pestis)
Yersinia pestis antiqua (21398999)