Here are two sea urchins from Lower Cretaceous period. They are both encrusted with small oyster shells, which is commonly seen.
Sea Urchin
Museum:
Lyme Regis
Period:
Lower Cretaceous
Strata:
Upper Greensand
Fossil Type:
Echinoderms >Sea Urchins
Common Name:
Sea Urchin
Scientific Name:
Cardiaster ananchytes
Age:
110 million years
Where it was Found:
Black Ven Lyme Regis
Found by:
Unknown
Accession Number:
L.1973.308-309
Images:
