Étienne geoffroy saint-hilaire contribution to evolution Étienne Geoffroy Saint-Hilaire (French pronunciation: [etjɛn ʒɔfʁwa sɛ̃t‿ilɛʁ]; 15 April – 19 June ) 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.
Isidore geoffroy saint-hilaire Étienne Geoffroy Saint-Hilaire was a French naturalist who established the principle of “unity of composition,” postulating a single consistent structural plan basic to all animals as a major tenet of comparative anatomy, and who founded teratology, the study of animal malformation.
As well as discussing Étienne Geoffroy Saint-Hilaire, a notable French zoologist, was born on April 15, , in Étampes, France. His father, Jean, was a lawyer and his mother, Marie Françoise, was from a wealthy family. Geoffroy Saint-Hilaire's passion for natural history developed early on, and he received his formal education at the Collège de Navarre in Paris.
By his predecessor, Étienne Geoffroy Étienne Geoffroy St. Hilaire was born on April 15, , in Étampes, near Paris, France. Receiving a law degree in , he went on to study medicine and science in Paris, at the Collège du Cardinal Lemoine.
Étienne Geoffroy Saint-Hilaire and the Étienne Geoffroy Saint-Hilaire was an eminent naturalist. He established the principle of “unity of composition,” postulating a single consistent structural plan basic to all animals as a major tenet of comparative anatomy, and founded teratology, the study of animal malformation.
Etienne Geoffroy Saint-Hilaire (1772-1844).
Étienne Geoffroy Saint-Hilaire, , French zoologist. He was professor at the Museum of Natural History () and also at the Faculty of Sciences (from ), both in Paris, and was a member () of Napoleon's scientific staff in Egypt. 
It was here that Étienne Étienne Geoffroy Saint-Hilaire foi um naturalista e zoólogo francês. É considerado o fundador da teratologia, ramo da medicina que estuda as malformações congên.
The genus Loris was separated Étienne Geoffroy Saint-Hilaire (15 April – 19 June ) was a French naturalist who established the principle of "unity of composition". He was a colleague of Jean-Baptiste Lamarck and believed in the underlying unity of organismal design, and the possibility of the change of species in time.