1.15" Cretaceous Echinoid (Holaster) Fossil - England
This is a fossil sea urchin of the species Holaster nodulosus that was collected from the Upper Cretaceous - Cenomanian of Devon, England.
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.