This image of two echinoid spines identified as Paracidaris florigemma (Phillips). They were found in the Corallian Beds Coral Rag Calne Wilts. England. The fossils date to the Mesozoic Era, Jurassic Period, Upper/Late Oxfordian stage.
Fossils were on display at the British Natural History Museum in London, England on August 2016.
