Ichthyosaur sclerotic ring. General description as JR 6.3 except that this has a small part of the skull (75 mm x 40 mm) attached by matrix to one side. It was found at the same time as JR 6.3 and most probably is from the same individual as isolated sclerotic rings are rare.
Size: 90mm diameter by 25mm
Size: 90mm diameter by 25mm