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Prom and Asti block, Arnioceras, Xipheroceras
On the left a nice block with the body chamber of a 25-30mm Asteroceras just exposed. Around it are three more Promicroceras ammonites, one very well exposed, all undamaged. Might be another prom beside the Asti.
Top right is a block of Arnioceras (A. flavum?). One lovely specimen on the top surface, but the block will contain many more underneath. Exposed specimen around 20mm and has just started to develop ribs.
Bottom right is a nice brown calcite Xipheroceras, 25mm diameter
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