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with molars consisting of a series of low
Standard: 6cm x7cm x 2cm
Most commonly formed in volcanic regions where lava flows have left gas bubbles in rock
The key rings come in 2 styles:
Ammonite Dactylioceras nodule urchin with molars consisting of aOur most popular fossil, an ammonite nodule which captures the ammonite and its negative within a split rock. Ammonites from this UK region contain iron pyrite, or fools gold, giving them a natural glimmer. Jurassic, circa 180 million years old. From Whitby, Yorkshire, England. The ammonite will be approximately 5cm 7cm. The nodule itself may be bigger. Measurements are approximate and the minimum size you should expect your item to be.