Geoffroy Saint-Hilaire, Étienne
Geoffroy Saint-Hilaire, Étienne
(ātyĕn` zhôfrwä` săNtēlĕr`), 1772–1844, French zoologist. He was professor at the Museum of Natural History (1793–1840) and also at the Faculty of Sciences (from 1809), both in Paris, and was a member (1798–1801) of Napoleon's scientific staff in Egypt. He expressed in his Philosophie anatomique (2 vol., 1818–22) and in other works the theory that all animals conform to a single plan of structure. This attracted many supporters but was strongly opposed by CuvierCuvier, Georges Léopold Chrétien Frédéric Dagobert, Baron, 1769–1832, French naturalist, b. Montbéliard, studied at the academy of Stuttgart. From 1795 he taught in the Jardin des Plantes.
..... Click the link for more information. , who had been his friend, and in 1830 a widely publicized debate between the two took place. Some of Geoffrey Saint-Hilaire's ideas have been confirmed by modern developmental biologists. His son, Isidore Geoffroy Saint-Hilaire, 1805–61, also a zoologist, was an authority on deviation from normal structure. He succeeded to his father's professorships.