Swedish botanist who published systemal nature. He also divided animals into one of two kingdoms, plants and animals. He designed a system of naming organisms called binomials which gave each organism 2 names, Genus and species. Genus is always capitalized while species is never capitalized. His classification system is still used today but instead we use a 5 kingdom system.
1969- Robert Harding Whittaker
The primary uses of classification in present day science.
Biology of Animals & Plants-http://faculty.fmcc.suny.edu/mcdarby/animals&plantsbook/History/02-Explaining-Life-Classification.htm
Carl Linnaeus- http://www.ucmp.berkeley.edu/history/linnaeus.html