Chocolate' flint : 2D documentation Upper Jurassic
Chocolate' flint : 2D documentation Upper Jurassic (Oxfordian/Kimmeridgian)
Szentgál radiolarite : 3D documentation Middle Jurassic
Cretaceous flint from Rijckholt-St.Geertruid mine : 2D documentation Upper Cretaceous (Maastrichtian)
Szentgál radiolarite : 2D documentation Middle Jurassic
Chocolate' flint : 3D documentation Upper Jurassic
Chocolate' flint : 3D documentation Upper Jurassic
Banded flint : 3D documentation Upper Jurassic (Oxfordian/Kimmeridgian)
Chocolate' flint : 2D documentation Upper Jurassic
Cretaceous flint from Rijckholt-St.Geertruid mine : 3D documentation Upper Cretaceous (Maastrichtian)
Banded flint : 3D documentation Upper Jurassic (Oxfordian/Kimmeridgian)
Chocolate' flint : 3D documentation Upper Jurassic (Oxfordian/Kimmeridgian)
Chocolate' flint : 2D documentation Upper Jurassic