# Fame.am profile — machine-readable export
# Canonical URL: https://fame.am/person/etienne-geoffroy-saint-hilaire
# Generated: 2026-08-15T14:32:08.675Z

schema: https://schema.org/Person
url: "https://fame.am/person/etienne-geoffroy-saint-hilaire"
name: "Étienne Geoffroy Saint-Hilaire"
slug: "etienne-geoffroy-saint-hilaire"
description: "Étienne Geoffroy Saint-Hilaire 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. Geoffroy's scientific views had a transcendental flavor and were similar to those of German morphologists like Lorenz Oken. He believed in the underlying unity of organismal design, and the possibility of the transmutation of species in time, amassing evidence for his claims through research in comparative anatomy, paleontology, and embryology. He is considered as a predecessor of the evo-devo evolutionary concept."
tagline: "French naturalist who established the principle of \"unity of composition\" (1772-1844)"
image: "https://commons.wikimedia.org/wiki/Special:FilePath/Geoffroy_Saint-Hilaire_%C3%89tienne_1772-1844.jpg?width=1200"
gender: "male"
country:
  name: "France"
  isoCode: "FR"
category:
  name: "Politicians"
  slug: "politicians"
profileType:
  name: "Politician"
  slug: "politician"
birthDate: "1772-04-15"
deathDate: "1844-06-19"
livingStatus: "DECEASED"
scores:
  popularity:           53.19
  momentum:             1.826923076923077
  historical:           21.43416933333334
  currentAttention:     0
  sourceConfidence:     60
  profileCompleteness:  70
  trendDirection:       "STABLE"
ranks:
  global:   null
  country:  null
  category: null
sources:
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    title: "Էթիեն Ժոֆրուա Սենտ-Իլեր"
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  - url: "https://www.wikidata.org/wiki/Q192428"
    title: "Wikidata"
    type:  "WIKIDATA"

# bio (long form, separated for readability)
bio: |
  Imported from discovery source: wikidata-dump