Science · Literature · Military · 1744–1829

Jean-Baptiste de Lamarck — Age, Birthday & Biography

Born: 1 August 1744 · Died: 18 December 1829 · Age at death: 85

How old was Jean-Baptiste de Lamarck when he died?

Jean-Baptiste de Lamarck died aged 85. He was born on 1 August 1744 and died on 18 December 1829.

French naturalist who coined the word invertebrate and proposed one of the first theories of evolution

Did you know?He coined the term biology to describe the study of living things, helping to establish it as a distinct scientific field.

Quick facts

  • Date of birth1 August 1744
  • Date of death18 December 1829
  • Age at death85
  • Cause of deathHeart attack
  • NationalityFrench
  • BirthplaceBazentin, France
  • Occupationbotanist, zoologist, naturalist

Editor's Take:

Jean-Baptiste de Lamarck proposed one of the first full theories of evolution. He was a soldier before turning to botany, writing a celebrated flora of France. At the Paris natural history museum he took charge of the creatures nobody else wanted: insects, worms and shellfish. He coined the word "invertebrate" and helped popularise "biology". In 1809 he argued that species gradually change over time. He believed traits gained in life were passed on, like a giraffe's stretched neck. That mechanism proved wrong, but his big idea of change was right. He died blind and poor.

Jean-Baptiste Pierre Antoine de Monet, chevalier de Lamarck (1 August 1744 – 18 December 1829), often known simply as Lamarck (French:), was a French naturalist, biologist, academic, and soldier. He was an early proponent of the idea that biological evolution occurred and proceeded in accordance with natural laws.

Text from Wikipedia, licensed under CC BY-SA 4.0

Profile

Jean-Baptiste de Lamarck: Early Evolution Pioneer

French naturalist, 1744–1829

Jean-Baptiste de Lamarck was born in Bazentin, France, on 1 August 1744.

He coined the term invertebrate.

He published Zoological Philosophy in 1809.

He died in Paris on 18 December 1829, aged 85.

Career highlights

  1. 1761Seven Years' War: soldier
  2. 1778Flore françoise: published
  3. 1793Museum: professor of invertebrates
  4. 1809Zoological Philosophy: evolution theory
  5. 1815Invertebrates: major study begins

Did you know?He was decorated for bravery as a 17-year-old soldier on his first day of battle.

Age at death
85
Years since death
196

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When is Jean-Baptiste de Lamarck's birthday?
Jean-Baptiste de Lamarck's birthday is August 1. He was born on August 1, 1744 in Bazentin, France.
How old was Jean-Baptiste de Lamarck when he died?
Jean-Baptiste de Lamarck died on December 18, 1829, aged 85.
Who shares a birthday with Jean-Baptiste de Lamarck?
Famous people who share Jean-Baptiste de Lamarck's August 1 birthday include Herman Melville, Abdullah of Saudi Arabia, Pierre Bourdieu, Georges Charpak and Bastian Schweinsteiger.

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Reviewed by the Who Shares My Birthday editorial team.

Last reviewed: October 2026