Archaebacteria have been part of the six-kingdom of life system for quite some time now. Although they are similar to regular bacteria or Eubacteria in that neither of them have DNA contained within a membrane, they have a very distinct difference. Archaebacteriaare different from eubacteria in that they do not have peptidoglycan in their cell walls. Archaebacteria are typically found in extreme environments.
1. Halobacterium found in salt environments.
2. Methanobacterium found in methane heavy environments within the earth.
3. Sulfur loving bacterium found near deep sea vents.
4. Thermophiles found in hot springs.