Świeciechów flint : 2D documentation Turonian
Cuiry-lès-Chaudardes : 3D documentation Cretaceous
Świeciechów flint : 2D documentation Turonian
Cuiry-lès-Chaudardes : 3D documentation Cretaceous
Chocolate' flint : 2D documentation Upper Jurassic
Chocolate' flint : 2D documentation Upper Jurassic
Świeciechów flint : 3D documentation Turonian
Świeciechów flint : 2D documentation Turonian
Siliceous hypertrophy : 2D documentation Upper Jurassic