Ce livre est une tude approfondie des ammonites et autres fossiles jurassiques de la r gion de Crussol en Ard che. Les auteurs d crivent en d tail les sp cimens d couverts et fournissent des interpr tations fascinantes sur les conditions g ologiques dans lesquelles les animaux ont v cu. Ce livre est une ressource pr cieuse pour les pal ontologues et les tudiants en g ologie.
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