3959712 Portrait of Ernst Haeckel, c.1910 (photo) by Perscheid, Nicola (1864??930); Private Collection; (add.info.: Ernst Heinrich Philipp August Haeckel (1834 ??919) 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.); Prismatic Pictures .