Plattenhornstein chert (Tabular chert of the Baiersdorf-type) : 2D documentation Tithonian/Upper Jurassic
Plattenhornstein chert (Tabular chert of the Baiersdorf-type) : 3D documentation Tithonian/Upper Jurassic
Blok krzemienny 113 [brak danych] Mazovian?
Grand-Pressigny flint : 3D documentation Turonian
Świeciechów flint : 3D documentation Turonian
Chocolate' flint : 2D documentation Upper Jurassic
Chocolate' flint : 3D documentation Upper Jurassic
Grand-Pressigny flint : 2D documentation Turonian
Świeciechów flint : 2D documentation Turonian