Wikimedi'Òc

Brecciated flint (Vanport Flint, Middle Pennsylvanian; Nethers Flint Quarries, Flint Ridge, Ohio, USA) 1 (33047092431).jpg - Ser Amantio di Nicolao

Brecciated flint (Vanport Flint, Middle Pennsylvanian; Nethers Flint Quarries, Flint Ridge, Ohio, USA) 2 (32329501814).jpg - Ser Amantio di Nicolao

Brecciated flint (Vanport Flint, Middle Pennsylvanian; Nethers Flint Quarries, Flint Ridge, Ohio, USA) 3 (33018119572).jpg - Ser Amantio di Nicolao

Brecciated flint (Vanport Flint, Middle Pennsylvanian; Nethers Flint Quarries, Flint Ridge, Ohio, USA) 4 (33018104852).jpg - Ser Amantio di Nicolao

Brecciated flint (Vanport Flint, Middle Pennsylvanian; Nethers Flint Quarries, Flint Ridge, Ohio, USA) 5 (32329480704).jpg - Ser Amantio di Nicolao

Brecciated flint (Vanport Flint, Middle Pennsylvanian; Nethers Flint Quarries, Flint Ridge, Ohio, USA) 7 (32792248020).jpg - Ser Amantio di Nicolao

Brecciated flint (Vanport Flint, Middle Pennsylvanian; Nethers Flint Quarries, Flint Ridge, Ohio, USA) 9 (33046998991).jpg - Ser Amantio di Nicolao

Flint (Vanport Flint, Middle Pennsylvanian; Nethers Flint Quarries, Flint Ridge, Ohio, USA) 118 (38736414395).jpg - Ser Amantio di Nicolao

Flint (Vanport Flint, Middle Pennsylvanian; Nethers Flint Quarries, Flint Ridge, Ohio, USA) 120 (39632985151).jpg - Ser Amantio di Nicolao

Flint (Vanport Flint, Middle Pennsylvanian; Nethers Flint Quarries, Flint Ridge, Ohio, USA) 128 (38976273535).jpg - Ser Amantio di Nicolao

Flint (Vanport Flint, Middle Pennsylvanian; Nethers Flint Quarries, Flint Ridge, Ohio, USA) 146 (39880119701).jpg - Ser Amantio di Nicolao

Brecciated flint (Vanport Flint, Middle Pennsylvanian; Nethers Flint Quarries, Flint Ridge, Ohio, USA) 10 (40101461301).jpg - Ser Amantio di Nicolao

Brecciated flint (Vanport Flint, Middle Pennsylvanian; Nethers Flint Quarries, Flint Ridge, Ohio, USA) 13 (27766179978).jpg - Ser Amantio di Nicolao

Brecciated flint (Vanport Flint, Middle Pennsylvanian; Nethers Flint Quarries, Flint Ridge, Ohio, USA) 12 (40101461761).jpg - Ser Amantio di Nicolao

Flint (Vanport Flint, Middle Pennsylvanian; Nethers Flint Quarries, Flint Ridge, Ohio, USA) 166.jpg - Ser Amantio di Nicolao