Cretaceous Echinoid, Extinct Fossilized Sea Urchin

Description

Species hardouinia mortonis .
Found on Holden Beach, North Carolina. Please see photos for size reference.
These are extinct sea urchins from the latest Cretaceous Peedee Formation, which is the rock unit that produces most of the late Cretaceous shark and mosasaur teeth that can be found along beaches of the famous Grand Strand of the Carolinas.
Cretaceous Echinoid, Extinct Fossilized Sea Urchin.
Cretaceous Echinoid, Extinct Fossilized Sea Urchin
stone natural rock fossil mineral.