Taxonomic Ranking of Bacteria

 Bacterial taxonomy is the taxonomy, i.e. the rank-based classification, of bacteria.

In the scientific classification established by Carl von Linné, each species has to be assigned to a genus (binary nomenclature), which in turn is a lower level of a hierarchy of ranks (family, suborder, order, subclass, class, division/phyla, kingdom and domain). In the currently accepted classification of Life, there are three domains (Eukaryotes, Bacteria and Archaea), which, in terms of taxonomy, despite following the same principles have several different conventions between them and between their subdivisions as are studied by different disciplines (Botany, zoology, mycology and microbiology), for example in zoology there are type specimens, whereas in microbiology there are type strains.

Species - a group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding. The species is the principal natural taxonomic unit, ranking below a genus and denoted by a Latin binomial

Genus - a principal taxonomic category that ranks above species and below family which contains a group of species with same characteristics.

Family - a principal taxonomic category that ranks above genus and below order, usually ending in -idae (in zoology) or -aceae (in botany).

Ordo (Order) - a principal taxonomic category that ranks below class and above family. Contains close groups of families

Classis (Class) – Contains related order groups

Division – Contains close groups of classes.

Regnum (Kingdom) - the highest category in taxonomic classification. For example Prokaryotes.

An example of taxonomic  order of Escherichia coli:
Kingdom: Prokaryotes
Division: Gracilicutes
Class: Scotobacteria
Order:  Eubacteriales
Family: Entereobacteriaceae
Genus: Escherichia
Species: Coli