Plattenhornstein chert of the Abensberg-Arnhofen type : 2D documentation Upper Jurassic
Plattenhornstein chert of the Abensberg-Arnhofen type : 3D documentation Upper Jurassic
Blok krzemienny 59 [brak danych] Mazovian
Blok krzemienny 65 [brak danych] Mazovian
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