16.5 cm Septarian ammonite bed with Xipheroceras and others, from Charmouth

A partially translucent piece measuring 16.5 cm across filled with Xipheroceras, Promicroceras and Cymbites ammonites with calcite septarian cracks.
 
The calcite has been stabalised on the reverse with no other restoration.  
The piece originates from the Stellare Septarian nodule bed. 
 
Lower Sinemurian, Black Ven Mudstone Member, Charmouth Mudstone Formation, Charmouth, Dorset. 195 MYA