This Specimen has been sold.
Two Displayable Fossil Sea Urchins (Clypeus) - England
This is a pair of large, and very 3D fossil sea urchins (Clypeus plotti) from the Middle Jurassic, Inferior Oolite of England. They are partially embedded in the rock it was found in, and the base was cut flat so that they displays nicely standing up on a hard surface.
The Inferior Oolite
4.3" & 3.5 wide