Balanocidaris glandifera - fossil sea urchin - Carapace with radiolas.
Excellent fossil of a sea urchin in life position. The hedgehog and spines have preserved the finest details and have been carefully arranged in a living position. The radiolas preserve the original colouring patterns. It is a fossil worthy of a museum.
Upper Jurassic, Kimmeridgian (152.1-157.3 million years) - France.