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Dakota Sandstone (Lower Cretaceous) (Dinosaur Ridge, Colorado, USA) 4
Dakota Sandstone (Lower Cretaceous) (Dinosaur Ridge, Colorado, USA) 4
by James St. John

クリエイティブ・コモンズ 表示 2.1

Sauropod dinosaur track in sandstone (Morrison Formation, Upper Jurassic; western side of Dinosaur Ridge, Colorado, USA) 1
Sauropod dinosaur track in sandstone (Morrison Formation, Upper Jurassic; western side of Dinosaur Ridge, Colorado, USA) 1
by James St. John

クリエイティブ・コモンズ 表示 2.1

Dinosaur bone in sandstone (Morrison Formation, Upper Jurassic; western side of Dinosaur Ridge, Colorado, USA) 3
Dinosaur bone in sandstone (Morrison Formation, Upper Jurassic; western side of Dinosaur Ridge, Colorado, USA) 3
by James St. John

クリエイティブ・コモンズ 表示 2.1


Derrick Cave
Derrick Cave
by BLM Oregon & Washington

クリエイティブ・コモンズ 表示 2.1

Four Corners Mine (Dakota Hogback, southwest of Denver, Colorado, USA) 1
Four Corners Mine (Dakota Hogback, southwest of Denver, Colorado, USA) 1
by James St. John

クリエイティブ・コモンズ 表示 2.1

Dakota Hogback (west of Denver, Colorado, USA) 11
Dakota Hogback (west of Denver, Colorado, USA) 11
by James St. John

クリエイティブ・コモンズ 表示 2.1


10.24.2010 <bridges of madison county> 282/365
10.24.2010 <bridges of madison county> 282/365
by Phil Roeder

クリエイティブ・コモンズ 表示 2.1

Indian Flats Cabin
Indian Flats Cabin
by Forest Service - Northern Region

クリエイティブ・コモンズ 表示 2.1

Sauropod dinosaur track in sandstone (Morrison Formation, Upper Jurassic; western side of Dinosaur Ridge, Colorado, USA) 2
Sauropod dinosaur track in sandstone (Morrison Formation, Upper Jurassic; western side of Dinosaur Ridge, Colorado, USA) 2
by James St. John

クリエイティブ・コモンズ 表示 2.1


Uranium roll front hosted in Dakota Sandstone (Turkey Creek Road roadcut, Dakota Hogback, near Denver, Colorado, USA) 19
Uranium roll front hosted in Dakota Sandstone (Turkey Creek Road roadcut, Dakota Hogback, near Denver, Colorado, USA) 19
by James St. John

クリエイティブ・コモンズ 表示 2.1

Dakota Hogback Watergap (Morrison, Colorado, USA) 15
Dakota Hogback Watergap (Morrison, Colorado, USA) 15
by James St. John

クリエイティブ・コモンズ 表示 2.1

Dinosaur bone in sandstone (Morrison Formation, Upper Jurassic; western side of Dinosaur Ridge, Colorado, USA) 2
Dinosaur bone in sandstone (Morrison Formation, Upper Jurassic; western side of Dinosaur Ridge, Colorado, USA) 2
by James St. John

クリエイティブ・コモンズ 表示 2.1


Dakota Hogback Watergap (Morrison, Colorado, USA) 2
Dakota Hogback Watergap (Morrison, Colorado, USA) 2
by James St. John

クリエイティブ・コモンズ 表示 2.1

Sauropod dinosaur footprint in lacustrine sandstone (Morrison Formation, Upper Jurassic, western side of Dinosaur Ridge, Colorado, USA) 13
Sauropod dinosaur footprint in lacustrine sandstone (Morrison Formation, Upper Jurassic, western side of Dinosaur Ridge, Colorado, USA) 13
by James St. John

クリエイティブ・コモンズ 表示 2.1

2009Vermont051
2009Vermont051
by LukeGordon1

クリエイティブ・コモンズ 表示 2.1


IMG_0001_coyote
IMG_0001_coyote
by gregor_y

クリエイティブ・コモンズ 表示-継承 2.1

Dakota Hogback Watergap (Morrison, Colorado, USA) 12
Dakota Hogback Watergap (Morrison, Colorado, USA) 12
by James St. John

クリエイティブ・コモンズ 表示 2.1

Dinosaur bone in sandstone (Morrison Formation, Upper Jurassic; western side of Dinosaur Ridge, Colorado, USA) 33
Dinosaur bone in sandstone (Morrison Formation, Upper Jurassic; western side of Dinosaur Ridge, Colorado, USA) 33
by James St. John

クリエイティブ・コモンズ 表示 2.1


Uranium roll front hosted in Dakota Sandstone (Turkey Creek Road roadcut, Dakota Hogback, near Denver, Colorado, USA) 27
Uranium roll front hosted in Dakota Sandstone (Turkey Creek Road roadcut, Dakota Hogback, near Denver, Colorado, USA) 27
by James St. John

クリエイティブ・コモンズ 表示 2.1

Planed-off cross-bedding (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 4
Planed-off cross-bedding (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 4
by James St. John

クリエイティブ・コモンズ 表示 2.1

Dakota Hogback Watergap (Morrison, Colorado, USA) 13
Dakota Hogback Watergap (Morrison, Colorado, USA) 13
by James St. John

クリエイティブ・コモンズ 表示 2.1


Sauropod dinosaur footprint in sandstone (Morrison Formation, Upper Jurassic, western side of Dinosaur Ridge, Colorado, USA) 45
Sauropod dinosaur footprint in sandstone (Morrison Formation, Upper Jurassic, western side of Dinosaur Ridge, Colorado, USA) 45
by James St. John

クリエイティブ・コモンズ 表示 2.1

red deer canyon
red deer canyon
by jasonwoodhead23

クリエイティブ・コモンズ 表示 2.1

Dakota Hogback (west of Denver, Colorado, USA) 7
Dakota Hogback (west of Denver, Colorado, USA) 7
by James St. John

クリエイティブ・コモンズ 表示 2.1


Dakota Hogback Watergap (Morrison, Colorado, USA) 5
Dakota Hogback Watergap (Morrison, Colorado, USA) 5
by James St. John

クリエイティブ・コモンズ 表示 2.1

Bentonite (105.6 Ma) in the Dakota Sandstone (Lower Cretaceous) (Dinosaur Ridge, Colorado, USA) 1
Bentonite (105.6 Ma) in the Dakota Sandstone (Lower Cretaceous) (Dinosaur Ridge, Colorado, USA) 1
by James St. John

クリエイティブ・コモンズ 表示 2.1

Sauropod dinosaur footprint in lacustrine sandstone (Morrison Formation, Upper Jurassic, western side of Dinosaur Ridge, Colorado, USA) 4
Sauropod dinosaur footprint in lacustrine sandstone (Morrison Formation, Upper Jurassic, western side of Dinosaur Ridge, Colorado, USA) 4
by James St. John

クリエイティブ・コモンズ 表示 2.1


Sauropod dinosaur footprint in lacustrine sandstone (Morrison Formation, Upper Jurassic, western side of Dinosaur Ridge, Colorado, USA) 14
Sauropod dinosaur footprint in lacustrine sandstone (Morrison Formation, Upper Jurassic, western side of Dinosaur Ridge, Colorado, USA) 14
by James St. John

クリエイティブ・コモンズ 表示 2.1

Uranium roll front & fault in sandstone (Turkey Creek Road roadcut, Dakota Hogback, near Denver, Colorado, USA) 1
Uranium roll front & fault in sandstone (Turkey Creek Road roadcut, Dakota Hogback, near Denver, Colorado, USA) 1
by James St. John

クリエイティブ・コモンズ 表示 2.1

Planed-off cross-bedding (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 1
Planed-off cross-bedding (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 1
by James St. John

クリエイティブ・コモンズ 表示 2.1


2009Vermont052
2009Vermont052
by LukeGordon1

クリエイティブ・コモンズ 表示 2.1

Late afternoon sun on the Dakota Hogback
Late afternoon sun on the Dakota Hogback
by oddharmonic

クリエイティブ・コモンズ 表示-継承 2.1

Four Corners Mine (Dakota Hogback, southwest of Denver, Colorado, USA) 9
Four Corners Mine (Dakota Hogback, southwest of Denver, Colorado, USA) 9
by James St. John

クリエイティブ・コモンズ 表示 2.1


Concretion (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 2
Concretion (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 2
by James St. John

クリエイティブ・コモンズ 表示 2.1

Dinosaur bone in sandstone (Morrison Formation, Upper Jurassic; western side of Dinosaur Ridge, Colorado, USA) 28
Dinosaur bone in sandstone (Morrison Formation, Upper Jurassic; western side of Dinosaur Ridge, Colorado, USA) 28
by James St. John

クリエイティブ・コモンズ 表示 2.1

Dakota Hogback Watergap (Morrison, Colorado, USA) 3
Dakota Hogback Watergap (Morrison, Colorado, USA) 3
by James St. John

クリエイティブ・コモンズ 表示 2.1


Crocodilian footprints on shoreline sandstone (Dakota Sandstone, Lower Cretaceous; eastern side of Dinosaur Ridge, Colorado, USA) 4
Crocodilian footprints on shoreline sandstone (Dakota Sandstone, Lower Cretaceous; eastern side of Dinosaur Ridge, Colorado, USA) 4
by James St. John

クリエイティブ・コモンズ 表示 2.1

170209-FS-Inyo-WhitneyPortal-InyoCountySheriff
170209-FS-Inyo-WhitneyPortal-InyoCountySheriff
by Region 5 Photography

クリエイティブ・コモンズ 表示 2.1

Arthur Lakes' Quarry 10 (Morrison Formation, Upper Jurassic; Dakota Hogback, Morrison, Colorado, USA) 3
Arthur Lakes' Quarry 10 (Morrison Formation, Upper Jurassic; Dakota Hogback, Morrison, Colorado, USA) 3
by James St. John

クリエイティブ・コモンズ 表示 2.1


Sauropod dinosaur footprint in lacustrine sandstone (Morrison Formation, Upper Jurassic, western side of Dinosaur Ridge, Colorado, USA) 10
Sauropod dinosaur footprint in lacustrine sandstone (Morrison Formation, Upper Jurassic, western side of Dinosaur Ridge, Colorado, USA) 10
by James St. John

クリエイティブ・コモンズ 表示 2.1

Bradley shoveling snow
Bradley shoveling snow
by bgautrea

クリエイティブ・コモンズ 表示-継承 2.1

Sauropod dinosaur footprint in lacustrine sandstone (Morrison Formation, Upper Jurassic, western side of Dinosaur Ridge, Colorado, USA) 11
Sauropod dinosaur footprint in lacustrine sandstone (Morrison Formation, Upper Jurassic, western side of Dinosaur Ridge, Colorado, USA) 11
by James St. John

クリエイティブ・コモンズ 表示 2.1


Petroleum-stained Dakota Sandstone (Turkey Creek Road roadcut, Dakota Hogback, near Denver, Colorado, USA) 1
Petroleum-stained Dakota Sandstone (Turkey Creek Road roadcut, Dakota Hogback, near Denver, Colorado, USA) 1
by James St. John

クリエイティブ・コモンズ 表示 2.1

Sauropod dinosaur bone in sandstone (Morrison Formation, Upper Jurassic; western side of Dinosaur Ridge, Colorado, USA)
Sauropod dinosaur bone in sandstone (Morrison Formation, Upper Jurassic; western side of Dinosaur Ridge, Colorado, USA)
by James St. John

クリエイティブ・コモンズ 表示 2.1

Pine on Dino Ridge
Pine on Dino Ridge
by iagoarchangel

クリエイティブ・コモンズ 表示-継承 2.1


Arthur Lakes' Quarry 10 (Morrison Formation, Upper Jurassic; Dakota Hogback, Morrison, Colorado, USA) 5
Arthur Lakes' Quarry 10 (Morrison Formation, Upper Jurassic; Dakota Hogback, Morrison, Colorado, USA) 5
by James St. John

クリエイティブ・コモンズ 表示 2.1

Structurally tilted mudshales (Pierre Shale, Upper Cretaceous; Dakota Ridge area, Colorado, USA)
Structurally tilted mudshales (Pierre Shale, Upper Cretaceous; Dakota Ridge area, Colorado, USA)
by James St. John

クリエイティブ・コモンズ 表示 2.1

Sauropod dinosaur footprint in lacustrine sandstone (Morrison Formation, Upper Jurassic, western side of Dinosaur Ridge, Colorado, USA) 9
Sauropod dinosaur footprint in lacustrine sandstone (Morrison Formation, Upper Jurassic, western side of Dinosaur Ridge, Colorado, USA) 9
by James St. John

クリエイティブ・コモンズ 表示 2.1


Sauropod dinosaur footprint in lacustrine sandstone (Morrison Formation, Upper Jurassic, western side of Dinosaur Ridge, Colorado, USA) 7
Sauropod dinosaur footprint in lacustrine sandstone (Morrison Formation, Upper Jurassic, western side of Dinosaur Ridge, Colorado, USA) 7
by James St. John

クリエイティブ・コモンズ 表示 2.1

Uranium roll front & molybdenum roll front hosted in Dakota Sandstone (Turkey Creek Road roadcut, Dakota Hogback, near Denver, Colorado, USA) 1
Uranium roll front & molybdenum roll front hosted in Dakota Sandstone (Turkey Creek Road roadcut, Dakota Hogback, near Denver, Colorado, USA) 1
by James St. John

クリエイティブ・コモンズ 表示 2.1

Crocodilian claw scratch marks (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 1
Crocodilian claw scratch marks (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 1
by James St. John

クリエイティブ・コモンズ 表示 2.1


Uranium roll front & molybdenum roll front hosted in Dakota Sandstone (Turkey Creek Road roadcut, Dakota Hogback, near Denver, Colorado, USA) 3
Uranium roll front & molybdenum roll front hosted in Dakota Sandstone (Turkey Creek Road roadcut, Dakota Hogback, near Denver, Colorado, USA) 3
by James St. John

クリエイティブ・コモンズ 表示 2.1

amer0356
amer0356
by NOAA Photo Library

クリエイティブ・コモンズ 表示 2.1

Dakota Hogback (west of Denver, Colorado, USA) 12
Dakota Hogback (west of Denver, Colorado, USA) 12
by James St. John

クリエイティブ・コモンズ 表示 2.1


Sauropod dinosaur footprint in lacustrine sandstone (Morrison Formation, Upper Jurassic, western side of Dinosaur Ridge, Colorado, USA) 2
Sauropod dinosaur footprint in lacustrine sandstone (Morrison Formation, Upper Jurassic, western side of Dinosaur Ridge, Colorado, USA) 2
by James St. John

クリエイティブ・コモンズ 表示 2.1

Sauropod dinosaur footprint in lacustrine sandstone (Morrison Formation, Upper Jurassic, western side of Dinosaur Ridge, Colorado, USA) 3
Sauropod dinosaur footprint in lacustrine sandstone (Morrison Formation, Upper Jurassic, western side of Dinosaur Ridge, Colorado, USA) 3
by James St. John

クリエイティブ・コモンズ 表示 2.1

Morrison Formation (Upper Jurassic; Dinosaur Ridge, west of Denver, Colorado, USA) 3
Morrison Formation (Upper Jurassic; Dinosaur Ridge, west of Denver, Colorado, USA) 3
by James St. John

クリエイティブ・コモンズ 表示 2.1


Fossil wood impression (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 1
Fossil wood impression (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 1
by James St. John

クリエイティブ・コモンズ 表示 2.1

170215-FS-Inyo
170215-FS-Inyo
by Region 5 Photography

クリエイティブ・コモンズ 表示 2.1

Red sandstone cliffs - Devil's Backbone
Red sandstone cliffs - Devil's Backbone
by warriorwoman531

クリエイティブ・コモンズ 表示-改変禁止 2.1



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