, 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.