Promicroceras marstonense,
Lower Jurassic, Lower Lias, Obtusum zone
Marston magna, Somerset, UK
This is a really nice specimen that has been fully prepared on one side and the reverse has been polished. There are 10 equisite Promicroceras Ammonites.running through this piece. The bottom of this specimen has been cut so that it is free standing.
The matrix measures approximately 10.5cm's x 10cm's