A fossil sea-urchin (irregular echinoid, Clypeus plotti) of local Jurassic limestone.

It was recorded from a subsoil deposit, with a central perforation that aligns with the natural anterior and posterior orifices of the creature. A lack of a smoothly worked surface and striations within this perforation indicate that the fossil was probably not deliberately modified, although from signs of wear on the anterior surface it appears to have been vertically suspended either as a possible small weight or amulet (use as a spindle whorl is also possible).

The collection, use, modification and curation of fossils, including sea-urchins (echinoids), in the past is well-documented in prehistory and later periods.