Ernst Haeckel

Ernst Heinrich Philipp August Haeckel (February 16, 1834 – August 9, 1919), was a German biologist, naturalist, philosopher, physician, professor and artist who discovered, described and named thousands of new species, mapped a genealogical tree relating all life forms, and coined many terms in biology, including anthropogeny, ecology, phylum, phylogeny, stem cell, and the kingdom Protista.