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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.
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.
- The Editors of Encyclopaedia Britannica
Aug 5, 2013 · Learn about the life and work of Geoffroy, a pioneer of experimental embryology and evolutionary theory. He developed the concept of the unity of plan and challenged Cuvier's typology of animals.
Étienne Geoffroy Saint-Hilaire est né le 15 avril 1772 rue de la Corderie à Étampes et il est baptisé le 15 avril 1772 en l'église Saint-Basile d’ Étampes 1. Saint-Hilaire est le nom d'un village près d' Étampes où son père avait fait l'acquisition d'une maison.
May 20, 2021 · Étienne Geoffroy Saint-Hilaire began his evolutionary journey into embryology in the 1820s (see Isidodre Geoffroy 1847; Cahn 1962; Fischer 1972b). He was a versatile naturalist: a zoologist, embryologist, palaeontologist, systematist, and student of the natural order of classification.
- Andrés Galera
- andres.galera@cchs.csic.es
- 2021
Dec 1, 2021 · Étienne Geoffroy Saint-Hilaire was the second major founder of comparative anatomy after George Cuvier (August 23, 1769–May 13, 1832). After the French Revolution, in 1793, together with Jean-Baptiste Lamarck, Geoffroy Saint-Hilaire reorganized the Jardin du Roi in the new Muséum national de l'histoire naturelle , a model of modern ...
May 21, 2018 · In 1825, with the Saurians of Normandy, Etienne Geoffroy Saint-Hilaire became interested in fossils. These ancient beings confirmed the unity principles. The new paleontologist was clever enough to foresee the real descendant links between these species of the past and the species of the present.
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