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Étienne Geoffroy Saint-Hilaire

politician

Étienne Geoffroy Saint-Hilaire

French naturalist who established the principle of "unity of composition" (1772-1844)

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About Étienne Geoffroy Saint-Hilaire

Étienne Geoffroy Saint-Hilaire was a French naturalist who established the principle of "unity of composition". He was a colleague of Jean-Baptiste Lamarck and expanded and defended Lamarck's evolutionary theories. Geoffroy's scientific views had a transcendental flavor and were similar to those of German morphologists like Lorenz Oken. He believed in the underlying unity of organismal design, and the possibility of the transmutation of species in time, amassing evidence for his claims through research in comparative anatomy, paleontology, and embryology. He is considered as a predecessor of the evo-devo evolutionary concept.

Facts from Wikidata (CC0). Image by Ambroise Tardieu via Wikimedia Commons (Public domain).

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Occupation: politician, zoologist, naturalist, ornithologist
Position held: député de Seine-et-Oise, president of the French Academy of Sciences
Citizenship: France
Born: April 15, 1772
Died: June 19, 1844

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