Chocolate' flint : 3D documentation Upper Jurassic
Chocolate' flint : 3D documentation Upper Oxford/ Lower Kimmeridgian
Chocolate' flint : 2D documentation Upper Jurassic
Villemaur-sur-Vanne : 2D documentation Cretaceous
Chocolate' flint : 2D documentation Upper Oxford/ Lower Kimmeridgian
Villemaur-sur-Vanne : 3D documentation Cretaceous
Banded flint : 2D documentation Upper Jurassic (Oxfordian/Kimmeridgian)
Banded flint : 3D documentation Upper Jurassic (Oxfordian/Kimmeridgian)