James St. John:
Morrison Formation (Upper Jurassic; Escalante Petrified Forest State Park, Utah, USA) 1
James St. John:
Morrison Formation (Upper Jurassic; Escalante Petrified Forest State Park, Utah, USA) 2
James St. John:
Morrison Formation (Upper Jurassic; Escalante Petrified Forest State Park, Utah, USA) 3
James St. John:
Morrison Formation (Upper Jurassic; Escalante Petrified Forest State Park, Utah, USA) 4
James St. John:
Balanced rock (Escalante Petrified Forest State Park, Utah, USA) 1
James St. John:
Balanced rock (Escalante Petrified Forest State Park, Utah, USA) 2
James St. John:
Balanced rock (Escalante Petrified Forest State Park, Utah, USA) 3
James St. John:
Opuntia sp. (prickly pear cactus) (Escalante Petrified Forest State Park, Utah, USA) 1
James St. John:
Opuntia sp. (prickly pear cactus) (Escalante Petrified Forest State Park, Utah, USA) 2
James St. John:
Morrison Formation over Entrada Sandstone (Jurassic; Escalante Petrified Forest State Park, Utah, USA) 1
James St. John:
Morrison Formation over Entrada Sandstone (Jurassic; Escalante Petrified Forest State Park, Utah, USA) 2
James St. John:
Morrison Formation (Upper Jurassic; Escalante Petrified Forest State Park, Utah, USA) 5
James St. John:
Morrison Formation (Upper Jurassic; Escalante Petrified Forest State Park, Utah, USA) 6
James St. John:
Morrison Formation (Upper Jurassic; Escalante Petrified Forest State Park, Utah, USA) 7
James St. John:
Conglomerate (Morrison Formation, Upper Jurassic; Escalante Petrified Forest State Park, Utah, USA) 1
James St. John:
Morrison Formation (Upper Jurassic; Escalante Petrified Forest State Park, Utah, USA) 8
James St. John:
Conglomerate (Morrison Formation, Upper Jurassic; Escalante Petrified Forest State Park, Utah, USA) 2
James St. John:
Conglomerate (Morrison Formation, Upper Jurassic; Escalante Petrified Forest State Park, Utah, USA) 3
James St. John:
Conglomerate (Morrison Formation, Upper Jurassic; Escalante Petrified Forest State Park, Utah, USA) 4
James St. John:
Shepherdia rotundifolia (roundleaf buffalo berry) (Escalante Petrified Forest State Park, Utah, USA) 1
James St. John:
Shepherdia rotundifolia (roundleaf buffalo berry) (Escalante Petrified Forest State Park, Utah, USA) 2
James St. John:
Shepherdia rotundifolia (roundleaf buffalo berry) (Escalante Petrified Forest State Park, Utah, USA) 3
James St. John:
Conglomerate (Morrison Formation, Upper Jurassic; Escalante Petrified Forest State Park, Utah, USA) 5
James St. John:
Conglomerate (Morrison Formation, Upper Jurassic; Escalante Petrified Forest State Park, Utah, USA) 6
James St. John:
Conglomerate (Morrison Formation, Upper Jurassic; Escalante Petrified Forest State Park, Utah, USA) 7
James St. John:
Spheroidally-weathered basalt boulder (Tertiary; Escalante Petrified Forest State Park, Utah, USA) 1
James St. John:
Spheroidally-weathered basalt boulder (Tertiary; Escalante Petrified Forest State Park, Utah, USA) 2
James St. John:
Spheroidally-weathered basalt boulder (Tertiary; Escalante Petrified Forest State Park, Utah, USA) 3
James St. John:
Twisted tree (Escalante Petrified Forest State Park, Utah, USA)
James St. John:
Spheroidally-weathered basalt boulder (Tertiary; Escalante Petrified Forest State Park, Utah, USA) 4
