Banded flint : 3D documentation Upper Jurassic (Oxfordian/Kimmeridgian)
Cretaceaous flint from Brzoza village : 3D documentation Upper Cretaceous
Banded flint : 2D documentation Upper Jurassic (Oxfordian/Kimmeridgian)
Cretaceaous flint from Brzoza village : 2D documentation Upper Cretaceous