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Une quatrième découverte de diplograptacées du Caradoc dans le Massif armoricain est signalée dansla partie supérieure de la Formation des Schistes d'Angers. Des moules tridimensionnels de graptolites, conservés dans des nodules, appartiennent apparemment à un ou deux (?) taxons dont la morphologie et les dimensions suggèrent respectivement des affinités avec le groupe Climacograptus antiquus (ressemblant...
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