A lovely cluster of Promicroceras with the largest ammonite measuring 28mm. Billions of these ammonites were killed off in a single catastrophic event some 200 million years ago, either by an algal bloom or perhaps volcanic activity. A beautiful small display item for the discerning collector.
This fantastic display fossil is exceptionally scarse from an iconic Lias locality.There is also an intense cluster of around 23 Promicroceras marstonense. Most of the ammonites still retain their original shells, preserved here as a white film. The matrix has a cut and level base for display options. Some 200 million years ago a catastrophic event wiped out billions of these ammonites. One for the serious collector.