Terrains Jurassiques
work by Orbigny
Learn about this topic in these articles:
study of Jurassic Period
- In geochronology: Stages and zones
…study of the French Jurassic Terrains Jurassiques (1842). This departure from a lithologically based concept of paleontologic succession enabled d’Orbigny to define paleontologically unique stages. Each stage represented a unique period in time and formed the basis of later work that resulted in the further subdivision of d’Orbigny’s original stages…
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