History of the classification of Bacteria and Archaea.
Time span
Classification mainly based on
Late 19th century Morphology, Growth Requirements, Pathogenic potential
1900–1960 Morphology, Physiology, Biochemistry
1960–1980 Chemotaxonomy, Numerical Taxonomy, DNA–DNA Hybridization
1980–today Genotypic Analyses, Multilocus Sequence Analyses, Average Nucleotide Identity, Whole Genome Analysis
References