Plattenhornstein rogowiec (Tabular chert of the Baiersdorf-type) : dokumentacja [2D] Tyton/Górna Jura
Chert : 2D documentation Jurassic/Cretaceous from Miocene sediments
Chert : 3D documentation Jurassic/Cretaceous from Miocene sediments
Plattenhornstein rogowiec (Tabular chert of the Baiersdorf-type) : dokumentacja [3D] Tyton/Górna Jura
Scandynavian Senonian Flint : 2D documentation Maastrichtian
Scandynavian Senonian Flint : 3D documentation Maastrichtian
Lousberg flint : 2D documentation Upper Cretaceous (Maastrichtian)
Lousberg flint : 3D documentation Upper Cretaceous (Maastrichtian)
Chocolate' flint : 3D documentation Upper Jurassic (Oxfordian/Kimmeridgian)
Chocolate' flint : 2D documentation Upper Jurassic (Oxfordian/Kimmeridgian)