Chocolate' flint : 3D documentation Upper Oxford/ Lower Kimmeridgian
Chocolate' flint : 3D documentation Upper Oxford/ Lower Kimmeridgian
Chocolate' flint : 2D documentation Upper Oxford/ Lower Kimmeridgian
Chocolate' flint : 2D documentation Upper Oxford/ Lower Kimmeridgian
Banded flint : 2D documentation Upper Jurassic (Oxfordian/Kimmeridgian)