Suborder Nannocystineae

Family "Haliangiaceae"
Haliangium

Family Kofleriaceae
Kofleria

Family Nannocystaceae
Enhygromyxa - Nannocystis - Plesiocystis

Suborder Sorangiineae

Family Polyangiaceae
Byssovorax - Chondromyces - Jahnella - Polyangium - Sorangium

Order Syntrophobacterales

Family Syntrophaceae
Desulfobacca - Desulfomonile - Smithella - Syntrophus

Family Syntrophobacteraceae
Desulfacinum - Desulfoglaeba - Desulforhabdus - Desulfovirga - Syntrophobacter - Thermodesulforhabdus

Unnamed Order

Family Syntrophorhabdaceae
Syntrophorhabdus

Class Epsilonproteobacteria

Order Campylobacterales

Family Campylobacteraceae
Arcobacter - Campylobacter - Dehalospirillum - Sulfurospirillum

Family Helicobacteraceae
Helicobacter - Sulfuricurvum - Sulfurimonas - Sulfurovum - Thiovulum - Wolinella

Family "Hydrogenimonaceae"
Hydrogenimonas

Order Nautiliales

Family Nautiliaceae
Caminibacter - Lebetimonas - Nautilia - Nitratifractor - Nitratiruptor - Thioreductor

Class Gammaproteobacteria

Order Acidithiobacillales

Family Acidithiobacillaceae
Acidithiobacillus

Family Thermithiobacillaceae
Thermithiobacillus

Order Aeromonadales

Family Aeromonadaceae
Aeromonas - Oceanimonas - Oceanisphaera - Tolumonas - Zobellella

Family Succinivibrionaceae
Anaerobiospirillum - Ruminobacter - Succinimonas - Succinivibrio

Order Alteromonadales

Family Alteromonadaceae
Aestuariibacter - Agarivorans - Alishewanella - Alteromonas - Bowmanella - Glaciecola - Haliea - Marinimicrobium - Marinobacter - Marinobacterium - Microbulbifer - Saccharophagus - Salinimonas

Family Colwelliaceae
Colwellia - Thalassomonas

Family Ferrimonadaceae
Ferrimonas - Paraferrimonas

Family Idiomarinaceae
Idiomarina - Pseudidiomarina

Family Moritellaceae
Moritella

Family Pseudoalteromonadaceae
Algicola - Pseudoalteromonas

Family Psychromonadaceae
Psychromonas

Family Shewanellaceae
Shewanella

Unclassified Alteromonadales
Teredinibacter

Order Cardiobacteriales

Family Cardiobacteriaceae
Cardiobacterium - Dichelobacter - Suttonella