1" Cretaceous Heart Urchin (Hemisaster) Fossil - France
This is a Cretaceous aged Hemiaster bufo fossil "heart urchin" from Cap de la Heve, France. Fossils of the genus Hemiaster have been dated back as far as the Cretaceous period.
Sea urchins are a type of echinoderm which are still living relatively unchanged today. They live at the bottom of soft ocean floors and have long spines protruding from their central body. They move along the bottom of the ocean using many small feet while feeding on various plant and animal matter.