ghkClassification - Gilles Kerhousse
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Imagine 1000 Ma
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Phylogenetic
Enterprise
Genealogy
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Plus+ [astronomie/ETOILES]
(in french)
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- International Commission on Stratigraphy (ICS)
- International Union of Geological Sciences, IUGS
- Encyclopaedia Britannica
- Encyclopaedia Universalis
- Wikipedia (fr, en, us, au)
- Geological Society of London