Ernst Haeckel

Ernst Heinrich Philipp August Haeckel was a German zoologist, naturalist, eugenicist, philosopher, physician, professor, marine biologist, 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 ecology, phylum, phylogeny, and Protista.

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.

The published artwork of Haeckel includes over 100 detailed, multi-colour illustrations of animals and sea creatures, collected in his Kunstformen der Natur ("Art Forms of Nature"). As a philosopher, Ernst Haeckel wrote Die Welträthsel (1895–1899; in English: The Riddle of the Universe, 1901), the genesis for the term "world riddle" (Welträtsel); and Freedom in Science and Teaching to support teaching evolution.

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Echinidea by Ernst Haeckel Poster

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Gorgonida by Ernst Haeckel Poster

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Copepoda by Ernst Haeckel Poster

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Phaeodaria by Ernst Haeckel Poster

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Siphonophorae II by Ernst Haeckel Poster

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Tubulariae by Ernst Haeckel Poster

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Narcomedusae by Ernst Haeckel Poster

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Saturomedusae by Ernst Haeckel Poster

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Flagellata by Ernst Haeckel Poster

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Discoidea by Ernst Haeckel Poster

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Fucoideae by Ernst Haeckel Poster

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Bryozoa by Ernst Haeckel Poster

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Ophiodea by Ernst Haeckel Poster

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Siphoneae II by Ernst Haeckel Poster

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Campanariae by Ernst Haeckel Poster

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Melethallia by Ernst Haeckel Poster

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Blastoidea by Ernst Haeckel Poster

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Cirripedia by Ernst Haeckel Poster

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Tetracoralla by Ernst Haeckel Poster

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Antilopina by Ernst Haeckel Poster

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Platodes by Ernst Haeckel Poster

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Spirobranchia by Ernst Haeckel Poster

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Phaeodaria by Ernst Haeckel Poster

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Bryozoa II by Ernst Haeckel Poster

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Spyroidea by Ernst Haeckel Poster

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Sertulariae by Ernst Haeckel Poster

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Rotatoria by Ernst Haeckel Poster

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Talamophora by Ernst Haeckel Poster

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Peridinea by Ernst Haeckel Poster

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Pennatulida by Ernst Haeckel Poster

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