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Jean-Baptiste Lamarck
Jean-baptiste lamarck2.jpg
Portrait of Jean-Baptiste Lamarck
Born (1744-08-01)August 1, 1744
Bazentin, Picardie
Died December 18, 1829(1829-12-18) (aged 85)
Nationality French
Known for Evolution; inheritance of acquired characters. Influenced Geoffroy
Scientific career
Institutions French Academy of Sciences; Muséum national d'Histoire naturelle; Jardin des Plantes

Jean-Baptiste Pierre Antoine de Monet, Chevalier de la Marck, usually known as Lamarck, (1 August 1744 – 18 December 1829) was a French soldier, naturalist and academic. He was one of the first people to suggest that organisms changed in accordance with natural laws. This is known as evolution.


Jean Lamarck (1744-1829) CIPA0718
Jean Lamarck (1744-1829)

Jean-Baptiste was the 11th child of Philippe Jacques de Monet de La Marck and Marie-Françoise de Fontaine de Chuignolles. His parents were nobles, but they were not well-off. His parents wanted him to become a priest. Starting at age eleven, he attended a Jesuit school in Amiens.

After his father's death in 1759, Jean-Baptiste joined the army. Lamarck fought in the Pomeranian War with Prussia, and was awarded a medal for bravery on the battlefield. During his service, he was stationed in different forts in France. At his post in Monaco, Lamarck became interested in natural history and resolved to study medicine.

In 1766, he was injured. He retired from the army in 1768 and returned to his medical studies. He worked at a bank in Paris. From 1770 to 1774, he studied medicine at the university, but did not finish his studies with a degree. During this time, he met some of the well-known scientists of his day, such as the botanists Bernard and Antoine-Laurent de Jussieu, and the naturalist Buffon.

Lamarck developed a particular interest for botany, and later, after he published a three-volume work, he gained membership of the French Academy of Sciences in 1779. When the Muséum national d'Histoire naturelle was founded in 1793, Lamarck was appointed as a professor of zoology.

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