Szentgál radiolarite : 2D documentation Middle Jurassic

Szentgál radiolarite : 3D documentation Middle Jurassic

Szentgál radiolarite : 3D documentation Middle Jurassic

Szentgál radiolarite : 2D documentation Middle Jurassic

Cretaceous flint from Rijckholt-St.Geertruid mine : 2D documentation Upper Cretaceous (Maastrichtian)

Cretaceous flint from Rijckholt-St.Geertruid mine : 2D documentation Upper Cretaceous (Maastrichtian)

Cretaceous flint from Rijckholt-St.Geertruid mine : 2D documentation Upper Cretaceous (Maastrichtian)

Cretaceous flint from Rijckholt-St.Geertruid mine : 2D documentation Upper Cretaceous (Maastrichtian)

Harrow Hill : 2D documentation Cretaceous

Harrow Hill : 2D documentation Cretaceous

Harrow Hill : 2D documentation Cretaceous

Harrow Hill : 2D documentation Cretaceous

Harrow Hill : 2D documentation Cretaceous

Harrow Hill : 2D documentation Cretaceous

Harrow Hill : 3D documentation Cretaceous

Harrow Hill : 3D documentation Cretaceous

Harrow Hill : 3D documentation Cretaceous

Harrow Hill : 3D documentation Cretaceous

Harrow Hill : 3D documentation Cretaceous

Harrow Hill : 3D documentation Cretaceous

Cretaceous flint from Rijckholt-St.Geertruid mine : 3D documentation Upper Cretaceous (Maastrichtian)

Cretaceous flint from Rijckholt-St.Geertruid mine : 3D documentation Upper Cretaceous (Maastrichtian)

Cretaceous flint from Rijckholt-St.Geertruid mine : 3D documentation Upper Cretaceous (Maastrichtian)

Cretaceous flint from Rijckholt-St.Geertruid mine : 3D documentation Upper Cretaceous (Maastrichtian)

Nointel : 3D documentation Upper Cretaceous