Étienne Geoffroy Saint-Hilaire
Naturalist
Died when: 72 years 65 days (866 months)Star Sign: Aries
Étienne Geoffroy Saint-Hilaire (15 April 1772 – 19 June 1844) 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 (unlike Lamarck's materialistic views) 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.
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