2.85" Cretaceous Sea Urchin (Collyrites) Fossil - Great Britain

Cretaceous Sea Urchin (Collyrites) Fossil - Great Britain #147164

This is a beautifully detailed and inflated sea urchin fossil of the species Hemipneustes striatoradiatus, collected from Gulpen, Netherlands. It's Cretaceous, Maastrichtian Stage in age, or approximately 66 - 72.85 million years old.

Sea urchins are a type of echinoderm that are still living relatively unchanged today. They live at the bottom of soft ocean floors and have long spines protruding from their central bodies. They move along the bottom of the ocean using many small feet while feeding on various plant and animal matter.