Promicroceras marstonense, Asteroceras sp
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 with the natural white shells left intact. There are 3 different species of ammonite on this piece, Promicroceras, Asteroceras and Cymbites The bottom and back of this specimen has been cut.so that it displays
The matrix measures approximately 6.5 cm's x 6cm's
