Chocolate' flint : 3D documentation Upper Jurassic
Tabular chert of the Abensberg-Arnhofen type : 3D documentation Upper Jurassic
Speckled Senonian Flint : 3D documentation Maastrichtian
Chocolate' flint : 2D documentation Upper Jurassic
Chocolate' flint : 3D documentation Upper Jurassic
Chocolate' flint : 3D documentation Upper Jurassic
Chocolate' flint : 2D documentation Upper Jurassic
Speckled Senonian Flint : 3D documentation Maastrichtian
Chocolate' flint : 3D documentation Upper Jurassic