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  1. Isidore Geoffroy Saint-Hilaire (16 December 1805 – 10 November 1861) was a French zoologist and an authority on deviation from normal structure. In 1854 he coined the term éthologie ( ethology ). [1]

  2. Dec 16, 2014 · Dr. William B. Ashworth, Jr., Consultant for the History of Science, Linda Hall Library and Associate Professor, Department of History, University of Missouri-Kansas City. Isidore Geoffroy Saint-Hilaire, a French zoologist, was born Dec. 16, 1805. Isidore was the son of the noted Darwinian precursor, Etienne Geoffroy Sainte-Hilaire, and he ...

  3. Isidore Geoffroy Saint-Hilaire (born Dec. 16, 1805, Paris, Fr.—died Nov. 10, 1861, Paris) was a French zoologist noted for his work on anatomical abnormalities in humans and lower animals. In 1824 Geoffroy joined his father at the National Museum of Natural History as an assistant naturalist, and, after taking his M.D. in 1829, he taught ...

    • The Editors of Encyclopaedia Britannica
  4. Feb 11, 2017 · Isidore Geoffroy Saint-Hilaire was born on 16 December 1805 in Paris, France, at the Museum of Natural History. His mother Pauline Brière de Mondétour and father Étienne Geoffroy Saint-Hilaire had three children in all, Isidore being the eldest. His other two siblings were twin sisters, Anaïs and Stéphanie.

  5. May 11, 2018 · Geoffroy Saint-Hilaire, Isidore. ( b. Paris, France, 16 December 1805; d Paris, 10 November 1861) zoology. The only son of Étienne Geoffroy Saint-Hilaire, Isidore wanted to become a mathematician; but his father saw in him the continuator of his work and engaged him in his laboratory as an aide-naturalise in 1824, when he was only nineteen.

  6. The French naturalist Isidore Geoffroy Saint-Hilaire wrote the first in-depth treatise on the gorilla in 1858; the wonderful lithograph, the first of its kind, was drawn by Marie Firmin Boucourt, who also executed a startling face-front portrait of a chimpanzee (see introduction to this section). We include this article for two reasons.

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  8. Isidore Geoffroy Saint-Hilaire studied anatomy and congenital abnormalities in humans and other animals in nineteenth century France. Under the tutelage of his father, Etienne Geoffroy Saint-Hilaire, Isidore compiled and built on his father's studies of individuals with developmental malformations, then called monstrosities.

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