Ernst Heinrich Philipp August Haeckel (February 16; 1834 - August 9; 1919); also written von Haeckel; was an eminent 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; and the kingdom Protista. Haeckel promoted and popularized Charles Darwin's work in Germany.