Graphoceras (Graphoceras) concavum (Sowerby 1815)
By Ludwigia
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21cm. Calcite mold with nice sutures. You can see exactly where the phragmocone ends and the living chamber, which is not quite complete, begins.From the concavum zone, upper Aalenian at the clay pit in Geisingen.
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Middle Jurassic Ammonites from Southern Germany
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