Promicroceras marstonense, Asteroceras 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 a mix of polished and prepared on the reverse. There are hundreds of complete and partial specimens running through this specimen with two Asteroceras as lots of Promicroceras and Xipheroceras. The bottom of this specimen has been cut so that it is free standing.
The matrix measures approximately 21 cm's x 17cm's and the piece weighs over 1.8kg