Field of biology that deals with the diversity of life. Systematics is usually divided into the two areas of phylogenetics and taxonomy.
This is an umbrella term to describe the processes that describe species. There are three disciplines which are united under this broad locution. First there is the description of species ( identification), then there is the naming of names ( taxonomy) and then there is the description of the relationships among and between taxa ( phylogenetics).
The science of identifying, describing, naming, and classifying groups of organisms and studying their genealogical histories.