Changes

A phylum of bacteria, composed of five classes.

A phylum of bacteria, composed of five classes.

Class '''Alphaproteobacteria''', orders Rhizobiales and Rickettsiales.

Class '''Alphaproteobacteria''', order Rhizobiales (families Bartonellaceae and Brucellaceae) and order Rickettsiales (families Anaplasmataceae and Rickettsiaceae).

Class '''Betaproteobacteria''', orders Burkholderiales and Neisseriales.

Class '''Betaproteobacteria''', order Burkholderiales (genera ''Alcaligenes, Bordetella, Taylorella'' and ''Burkholderia'') and order Neisseriales.

Class '''Gammaproteobacteria''', orders Pasteurellales, Pseudomonadales, Legionellales and Thiotrichales. It also includes the families Enterobacteriaceae and Vibrionaceae.

Class '''Gammaproteobacteria''', orders Pasteurellales, Pseudomonadales, Legionellales and Thiotrichales. It also includes the families Enterobacteriaceae and Vibrionaceae.

Class '''Deltaproteobacteria''', order Myxobacteria.

Class '''Deltaproteobacteria''', order Myxobacteria (genus ''Myxococcus'').

Class '''Epsilonproteobacteria''', order Campylobacterales (families Campylobacteriaceae and Helicobacteriaceae).

Class '''Epsilonproteobacteria''', order Campylobacterales (families Campylobacteriaceae and Helicobacteriaceae).