Chocolate' flint : 2D documentation Upper Jurassic
Chocolate' flint : 3D documentation Upper Jurassic
Chocolate' flint : 3D documentation Upper Jurassic
Świeciechów flint : 3D documentation Turonian
Świeciechów flint : 3D documentation Turonian
Abilly la Claisière : 3D documentation Turonian
Speckled Senonian Flint : 3D documentation Maastrichtian
Siliceous hypertrophy : 3D documentation Upper Jurassic
Siliceous hypertrophy : 2D documentation Upper Jurassic