Banded flint : 2D documentation Upper Jurassic (Oxfordian/Kimmeridgian)
Chocolate' flint : 3D documentation Upper Jurassic
Chocolate' flint : 3D documentation Upper Jurassic (Oxfordian/Kimmeridgian)
Chocolate' flint : 2D documentation Upper Jurassic
Świeciechów flint : 3D documentation Turonian
Świeciechów flint : 2D documentation Turonian
Chocolate' flint : 3D documentation Upper Jurassic (Oxfordian/Kimmeridgian)
Chocolate' flint : 3D documentation Upper Jurassic (Oxfordian/Kimmeridgian)
Chocolate' flint : 3D documentation Upper Jurassic (Oxfordian/Kimmeridgian)
Chocolate' flint : 3D documentation Upper Jurassic (Oxfordian/Kimmeridgian)
Chocolate' flint : 3D documentation Upper Jurassic (Oxfordian/Kimmeridgian)
Banded flint : 3D documentation Upper Jurassic (Oxfordian/Kimmeridgian)
Tabular chert of the Baiersdorf-type : 2D documentation Tithonian/Upper Jura
Tabular chert of the Baiersdorf-type : 3D documentation Tithonian/Upper Jura
Chocolate' flint : 3D documentation Upper Jurassic
Chocolate' flint : 3D documentation Upper Jurassic
Chocolate' flint : 3D documentation Upper Jurassic
Chocolate' flint : 2D documentation Upper Jurassic
Chocolate' flint : 2D documentation Upper Jurassic
Chocolate' flint : 2D documentation Upper Jurassic