Fossil Urchin

Fossil sea urchin from the Cretaceous period (100 million years old approx). Not sure of species.

Found on East Cliff Beach, Lyme Regis, UK.

Kit: Olympus OMD EM10 III,

Urth OM->OMD adapter,

Tokina 35-70mm 3.5-4.8 lens in Macro mode, aperture 5.6

Posso 52mm Close-Up No4 filter.