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One Promicroceras in a partial small nodule. A bump on the other edge of the nodule at the same level might (not guaranteed!) be another ammonite of similar size.
A second piece of nodule containing another Promicroceras with a small section of iridescence. This is a small section of the ammonites original shell and is very uncommon. This iridescence will not stand brushing or air-abrasive. The colour will also be lost if you try to protect it with varnish or another type of coating.
The third piece is a small section of Turneri zone, Promicroceras bed. Several ammonites are exposed and when prepared it should show around half a dozen specimens. All are small as is usual in this bed (10-15mm).
Moderate Difficulty. Scale in photo.
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