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Ernst Haeckel / Photo / 1910 / Jena
Haeckel, Ernst Zoologist and natural philosopher,
Potsdam 16.2.1834 – Jena 9.8.1919.

Ernst Haeckel in his Jena study.

Photo, c. 1910.
Rhizopodenformen nach Ernst Haeckel
Radiolarienzellen nach Ernst Haeckel
Theilung der Eizelle
Pithecanthropus Alalus
sur 1
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August 2019: 100 Years since the Death of Ernst Haeckel
August 2019: 100 Years since the Death of Ernst Haeckel.

Ernst Heinrich Philipp August Haeckel,
16 February 1834 – 9 August 1919,
German biologist, naturalist, philosopher, physician, professor, marine biologist, and artist who discovered, described and named thousands of new species.

Haeckel promoted and popularised Charles Darwin's work in Germany and developed the influential but no longer widely held recapitulation theory ("ontogeny recapitulates phylogeny") claiming that an individual organism's biological development, or ontogeny, parallels and summarises its species' evolutionary development, or phylogeny.

February 2034: 200 years since the birth of Ernst Haeckel.