List of Famous people with last name Saint-hilaire

Isidore Geoffroy Saint-Hilaire was a French zoologist and an authority on deviation from normal structure. In 1854 he coined the term éthologie (ethology).

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.

Augustin François César Prouvençal de Saint-Hilaire, French botanist and traveler, was born at Orléans, France, on 4 October 1779. A keen observer, he is credited with important discoveries in botany, notably the direction of the radicle in the embryo sac and the double point of attachment of certain ovules. He also described two families, the Paronychiae and the Tamariscinae, as well as many genera and species.

Jean Henri Jaume Saint-Hilaire was a French naturalist and artist, born in Grasse, France.