Wikimedi'Òc

Cone in cone mcr1.jpg - Rygel, M.C.

Striated cone-in-cone limestone (likely an interbed from the Ohio Shale, Upper Devonian; creek bed of an Alum Creek tributary, northern Delaware County, Ohio, USA) 2 (16554164303).jpg - Ser Amantio di Nicolao

Concretionary cone-in-cone structures (Benton Shale, Upper Cretaceous; Red Rock Canyon Open Space, Colorado Springs, Colorado, USA) 2.jpg - Ser Amantio di Nicolao

Concretionary cone-in-cone structures (Benton Shale, Upper Cretaceous; Red Rock Canyon Open Space, Colorado Springs, Colorado, USA) 1.jpg - Ser Amantio di Nicolao

Concretionary cone-in-cone structures (Benton Shale, Upper Cretaceous; Red Rock Canyon Open Space, Colorado Springs, Colorado, USA) 11.jpg - Ser Amantio di Nicolao

Cone-in-cone limestone bed (probably from an interbed in the Ohio Shale, Upper Devonian; central Ohio, USA) 2.jpg - Ser Amantio di Nicolao

Cone-in-cone structures (Whitewood, South Dakota, USA) 1.jpg - Ser Amantio di Nicolao

Cone-in-cone limestone bed (probably from an interbed in the Ohio Shale, Upper Devonian; central Ohio, USA) 1.jpg - Ser Amantio di Nicolao

Cone-in-cone structures (Whitewood, South Dakota, USA) 2.jpg - Ser Amantio di Nicolao

Cone-in-cone calcite (western South Dakota, USA) 1.jpg - Ser Amantio di Nicolao

Cone-in-cone calcite (western South Dakota, USA) 2.jpg - Ser Amantio di Nicolao

Cone-in-cone calcite (western South Dakota, USA) 3.jpg - Ser Amantio di Nicolao

Cone-in-cone limestone (likely an interbed from the Ohio Shale, Upper Devonian; Alum Creek Lake area, Delaware County, Ohio, USA) 1.jpg - Ser Amantio di Nicolao

Cone-in-cone limestone (likely an interbed from the Ohio Shale, Upper Devonian; Alum Creek Lake area, Delaware County, Ohio, USA) 2.jpg - Ser Amantio di Nicolao

Cone-in-cone limestone (likely an interbed from the Ohio Shale, Upper Devonian; Alum Creek Lake area, Delaware County, Ohio, USA) 5.jpg - Ser Amantio di Nicolao

Cone-in-cone limestone (likely an interbed from the Ohio Shale, Upper Devonian; Alum Creek Lake area, Delaware County, Ohio, USA) 7.jpg - Ser Amantio di Nicolao

Cone-in-cone limestone (likely an interbed from the Ohio Shale, Upper Devonian; Alum Creek Lake area, Delaware County, Ohio, USA) 8.jpg - Ser Amantio di Nicolao