EBhubaneswar - Happy Birthday - Dr Ernst Haeckel Born 16 Feb 1834; died 9 Aug 1919 at age 85. Ernst Heinrich Haeckel was a German #naturalist and #biologist who separated the animal
![Professor Ernst Heinrich Haeckel, 1834 - 1919, German zoologist, philosopher and free thinker, historical illustration, 1877 Stock Photo - Alamy Professor Ernst Heinrich Haeckel, 1834 - 1919, German zoologist, philosopher and free thinker, historical illustration, 1877 Stock Photo - Alamy](https://c8.alamy.com/comp/C24KKT/professor-ernst-heinrich-haeckel-1834-1919-german-zoologist-philosopher-C24KKT.jpg)
Professor Ernst Heinrich Haeckel, 1834 - 1919, German zoologist, philosopher and free thinker, historical illustration, 1877 Stock Photo - Alamy
1962 "Ernst Heinrich Haeckel - on the Duty of Thinkers" The Rand Corporation Famous People in History Print | Chairish
![History of Ecological Sciences, Part 47: Ernst Haeckel's Ecology - Egerton - 2013 - The Bulletin of the Ecological Society of America - Wiley Online Library History of Ecological Sciences, Part 47: Ernst Haeckel's Ecology - Egerton - 2013 - The Bulletin of the Ecological Society of America - Wiley Online Library](https://esajournals.onlinelibrary.wiley.com/cms/asset/11e3a022-0431-497c-a516-e1a83a7a4264/bes22013943222-fig-0002-m.jpg)
History of Ecological Sciences, Part 47: Ernst Haeckel's Ecology - Egerton - 2013 - The Bulletin of the Ecological Society of America - Wiley Online Library
![Ernst Haeckel's Sublime Drawings of Flora and Fauna: The Beautiful Scientific Drawings That Influenced Europe's Art Nouveau Movement (1889) | Open Culture Ernst Haeckel's Sublime Drawings of Flora and Fauna: The Beautiful Scientific Drawings That Influenced Europe's Art Nouveau Movement (1889) | Open Culture](https://cdn8.openculture.com/2017/11/28230817/724px-Haeckel_Tubulariae.jpg)