James St. John:
Peloidal phosphorite (Phosphoria Formation, mid-Permian; Simplot Mine, Bingham County, southeastern Idaho, USA) 1
James St. John:
Peloidal phosporite (Phosphoria Formation, mid-Permian; Simplot Mine, southeastern Idaho, USA)
James St. John:
Pyromorphite (Bunker Hill Mine, Idaho, USA) 1
James St. John:
Pyromorphite (Bunker Hill Mine, Idaho, USA) 2
James St. John:
Snake River (Blackfoot, Idaho, USA) 1
James St. John:
Precious opal (Spencer Opal Mine, Spencer, Idaho, USA)
James St. John:
Equus simplicidens (fossil Hagerman horse) (Pliocene; Idaho, USA) 1
James St. John:
Equus simplicidens (fossil Hagerman horse) (Pliocene; Idaho, USA) 2
James St. John:
Equus simplicidens (fossil Hagerman horse) (Pliocene; Idaho, USA) 3
James St. John:
Equus simplicidens (fossil Hagerman horse bones) (Glenns Ferry Formation, Upper Pliocene; Hagerman Horse Quarry, near Hagerman, Idaho, USA)
James St. John:
Equus simplicidens (fossil Hagerman horse) (Pliocene; Idaho, USA) 4
James St. John:
Equus simplicidens (fossil Hagerman horse) (Pliocene; Idaho, USA) 5
James St. John:
Equus simplicidens (fossil Hagerman horse) (Pliocene; Idaho, USA) 6
James St. John:
Equus simplicidens (fossil Hagerman horse) (Pliocene; Idaho, USA) 7
James St. John:
Equus simplicidens (fossil Hagerman horse) (Pliocene; Idaho, USA) 8
James St. John:
Reconstruction of Equus simplicidens (fossil Hagerman horse) (Pliocene; Idaho, USA)
James St. John:
Helicoprion sp. (fossil shark tooth whorl) (Phosphoria Formation, mid-Permian; Idaho, USA) 1
James St. John:
Helicoprion sp. (fossil shark tooth whorl) (Phosphoria Formation, mid-Permian; Idaho, USA) 2
James St. John:
Helicoprion sp. (fossil shark tooth whorl) (Phosphoria Formation, mid-Permian; Idaho, USA) 3
James St. John:
Helicoprion sp. (fossil shark tooth whorl) (Phosphoria Formation, mid-Permian; Idaho, USA) 4
James St. John:
Helicoprion sp. (fossil shark tooth whorl) (Phosphoria Formation, mid-Permian; Idaho, USA) 5
James St. John:
Helicoprion sp. (fossil shark tooth whorl) (Phosphoria Formation, mid-Permian; Idaho, USA) 6
James St. John:
Helicoprion sp. (fossil shark tooth whorl) (Phosphoria Formation, mid-Permian; Idaho, USA) 7
James St. John:
Helicoprion ferrieri (fossil shark tooth whorl) in phosphatic limestone (Phosphoria Formation, mid-Permian; Waterloo Mine, near Montpelier, Idaho, USA) 1
James St. John:
Helicoprion ferrieri (fossil shark tooth whorl) in phosphatic limestone (Phosphoria Formation, mid-Permian; Waterloo Mine, near Montpelier, Idaho, USA) 2
James St. John:
Helicoprion ferrieri (fossil shark tooth whorl) in phosphatic limestone (Phosphoria Formation, mid-Permian; Waterloo Mine, near Montpelier, Idaho, USA) 3
James St. John:
Helicoprion ferrieri (fossil shark tooth whorl) in phosphatic limestone (Phosphoria Formation, mid-Permian; Waterloo Mine, near Montpelier, Idaho, USA) 4
James St. John:
Black concretionary phosphorite (Morris Member, Phosphoria Formation, mid-Permian; Waterloo Mine, Bear Lake County, Idaho, USA)
James St. John:
Helicoprion sp. (fossil shark tooth whorl) in black concretionary phosphorite (Morris Member, Phosphoria Formation, mid-Permian; Waterloo Mine, Bear Lake County, Idaho, USA)
James St. John:
Helicoprion sp. (fossil shark tooth whorl) (Phosphoria Formation, mid-Permian; Gay Mine, Bingham County, Idaho, USA) 1
