.9" Jurassic Echinoid (Collyrites) Fossil - France
This is a beautiful fossil urchin of the genus Collyrites, from the Jurassic period. It was found in the Dogger Formation of Orne, France.
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.