Banded flint : 2D documentation Upper Jurassic (Oxfordian/Kimmeridgian)
Lousberg flint : 3D documentation Upper Cretaceous (Maastrichtian)
Banded flint : 2D documentation Upper Jurassic (Oxfordian/Kimmeridgian)
Villemaur-sur-Vanne : 3D documentation Cretaceous
Villemaur-sur-Vanne : 3D documentation Cretaceous
Villemaur-sur-Vanne : 3D documentation Cretaceous
Chocolate' flint : 3D documentation Upper Jurassic (Oxfordian/Kimmeridgian)
Banded flint : 3D documentation Upper Jurassic (Oxfordian/Kimmeridgian)
Banded flint : 3D documentation Upper Jurassic (Oxfordian/Kimmeridgian)
Jurassic flint : 3D documentation Upper Jurassic
Jurassic flint : 3D documentation Upper Jurassic
Jurassic flint : 3D documentation Upper Jurassic
Jurassic flint : 3D documentation Upper Jurassic
Siliceous hypertrophy : 3D documentation Upper Jurassic