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Crocodilian claw scratch marks (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 7
Crocodilian claw scratch marks (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 7
by James St. John

クリエイティブ・コモンズ 表示 2.1

Dinosaur tracks (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 85
Dinosaur tracks (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 85
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) 26
Dinosaur bone in sandstone (Morrison Formation, Upper Jurassic; western side of Dinosaur Ridge, Colorado, USA) 26
by James St. John

クリエイティブ・コモンズ 表示 2.1


Fossil seed pod (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 3
Fossil seed pod (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 3
by James St. John

クリエイティブ・コモンズ 表示 2.1

Cross-bedded sandstones (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 2
Cross-bedded sandstones (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

Crocodilian footprint (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 14
Crocodilian footprint (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 14
by James St. John

クリエイティブ・コモンズ 表示 2.1


Caririchnium leonardii dinosaur tracks (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 2
Caririchnium leonardii dinosaur tracks (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

E and Silver, small hogback
E and Silver, small hogback
by lostinfog

クリエイティブ・コモンズ 表示-継承 2.1

Gray shale & bentonites (Benton Shale, Upper Cretaceous; Red Rock Canyon Open Space, Colorado Springs, Colorado, USA) 5
Gray shale & bentonites (Benton Shale, Upper Cretaceous; Red Rock Canyon Open Space, Colorado Springs, Colorado, USA) 5
by James St. John

クリエイティブ・コモンズ 表示 2.1


Cross-bedded sandstones (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 1
Cross-bedded sandstones (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

Lee at camp
Lee at camp
by jsalita

クリエイティブ・コモンズ 表示-改変禁止 2.1

Dinosaur tracks (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 51
Dinosaur tracks (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 51
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) 21
Dinosaur bone in sandstone (Morrison Formation, Upper Jurassic; western side of Dinosaur Ridge, Colorado, USA) 21
by James St. John

クリエイティブ・コモンズ 表示 2.1

Dakota Sandstone (Lower Cretaceous) (Dinosaur Ridge, Colorado, USA) 12
Dakota Sandstone (Lower Cretaceous) (Dinosaur Ridge, Colorado, USA) 12
by James St. John

クリエイティブ・コモンズ 表示 2.1

K and Dunny, small hogback
K and Dunny, small hogback
by lostinfog

クリエイティブ・コモンズ 表示-継承 2.1


Sauropod dinosaur footprint in sandstone (Morrison Formation, Upper Jurassic, western side of Dinosaur Ridge, Colorado, USA) 23
Sauropod dinosaur footprint in sandstone (Morrison Formation, Upper Jurassic, western side of Dinosaur Ridge, Colorado, USA) 23
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) 27
Dinosaur bone in sandstone (Morrison Formation, Upper Jurassic; western side of Dinosaur Ridge, Colorado, USA) 27
by James St. John

クリエイティブ・コモンズ 表示 2.1

Concretionary cone-in-cone structures (Benton Shale, Upper Cretaceous; Red Rock Canyon Open Space, Colorado Springs, Colorado, USA) 15
Concretionary cone-in-cone structures (Benton Shale, Upper Cretaceous; Red Rock Canyon Open Space, Colorado Springs, Colorado, USA) 15
by James St. John

クリエイティブ・コモンズ 表示 2.1


Dinosaur tracks (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 78
Dinosaur tracks (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 78
by James St. John

クリエイティブ・コモンズ 表示 2.1

Gray shale & bentonites (Benton Shale, Upper Cretaceous; Red Rock Canyon Open Space, Colorado Springs, Colorado, USA) 4
Gray shale & bentonites (Benton Shale, Upper Cretaceous; Red Rock Canyon Open Space, Colorado Springs, Colorado, USA) 4
by James St. John

クリエイティブ・コモンズ 表示 2.1

Gray shale & bentonites (Benton Shale, Upper Cretaceous; Red Rock Canyon Open Space, Colorado Springs, Colorado, USA) 6
Gray shale & bentonites (Benton Shale, Upper Cretaceous; Red Rock Canyon Open Space, Colorado Springs, Colorado, USA) 6
by James St. John

クリエイティブ・コモンズ 表示 2.1


Normal fault in the Dakota Sandstone-Mowry Shale (Turkey Creek Road roadcut, Dakota Hogback, near Denver, Colorado, USA) 16
Normal fault in the Dakota Sandstone-Mowry Shale (Turkey Creek Road roadcut, Dakota Hogback, near Denver, Colorado, USA) 16
by James St. John

クリエイティブ・コモンズ 表示 2.1

Caririchnium leonardii dinosaur tracks (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 3
Caririchnium leonardii dinosaur tracks (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 3
by James St. John

クリエイティブ・コモンズ 表示 2.1

Skyline Drive: South Fork Shenandoah
Skyline Drive: South Fork Shenandoah
by selkovjr

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) 76
Sauropod dinosaur footprint in sandstone (Morrison Formation, Upper Jurassic, western side of Dinosaur Ridge, Colorado, USA) 76
by James St. John

クリエイティブ・コモンズ 表示 2.1

PB072666_horsetooth
PB072666_horsetooth
by gregor_y

クリエイティブ・コモンズ 表示-継承 2.1

Dakota Sandstone (Lower Cretaceous; Turkey Creek Watergap, southwest of Denver, Colorado, USA) 3
Dakota Sandstone (Lower Cretaceous; Turkey Creek Watergap, southwest of Denver, Colorado, USA) 3
by James St. John

クリエイティブ・コモンズ 表示 2.1


2008_09_18_bos-lax-lav_284
2008_09_18_bos-lax-lav_284
by dsearls

クリエイティブ・コモンズ 表示-継承 2.1

Rippled sandstone (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 28
Rippled sandstone (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 28
by James St. John

クリエイティブ・コモンズ 表示 2.1

Dinosaur bones in sandstone (Morrison Formation, Upper Jurassic; western side of Dinosaur Ridge, Colorado, USA) 5
Dinosaur bones in sandstone (Morrison Formation, Upper Jurassic; western side of Dinosaur Ridge, Colorado, USA) 5
by James St. John

クリエイティブ・コモンズ 表示 2.1


Murphy's Hogback, zoomed
Murphy's Hogback, zoomed
by sf-dvs

クリエイティブ・コモンズ 表示 2.1

you can see the earth curvature.
you can see the earth curvature.
by Paul David Lujan

クリエイティブ・コモンズ 表示-改変禁止 2.1

Sauropod dinosaur footprint in sandstone (Morrison Formation, Upper Jurassic, western side of Dinosaur Ridge, Colorado, USA) 55
Sauropod dinosaur footprint in sandstone (Morrison Formation, Upper Jurassic, western side of Dinosaur Ridge, Colorado, USA) 55
by James St. John

クリエイティブ・コモンズ 表示 2.1


Hogback at the Kelvingrove Art gallery & museum, Glasgow
Hogback at the Kelvingrove Art gallery & museum, Glasgow
by Bochum1805

クリエイティブ・コモンズ 表示-継承 2.1

Crocodilian claw scratch marks (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 9
Crocodilian claw scratch marks (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 9
by James St. John

クリエイティブ・コモンズ 表示 2.1

Normal fault in the Dakota Sandstone-Mowry Shale (Turkey Creek Road roadcut, Dakota Hogback, near Denver, Colorado, USA) 13
Normal fault in the Dakota Sandstone-Mowry Shale (Turkey Creek Road roadcut, Dakota Hogback, near Denver, 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) 54
Sauropod dinosaur footprint in sandstone (Morrison Formation, Upper Jurassic, western side of Dinosaur Ridge, Colorado, USA) 54
by James St. John

クリエイティブ・コモンズ 表示 2.1

Crocodilian footprint (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 5
Crocodilian footprint (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 5
by James St. John

クリエイティブ・コモンズ 表示 2.1

The Hogback in Boulder Utah
The Hogback in Boulder Utah
by Tony Webster

クリエイティブ・コモンズ 表示 2.1


Heterotheca pumila (dwarf golden asters) (Dinosaur Ridge, Colorado, USA)
Heterotheca pumila (dwarf golden asters) (Dinosaur Ridge, Colorado, USA)
by James St. John

クリエイティブ・コモンズ 表示 2.1

Dakota Sandstone (Lower Cretaceous; Turkey Creek Watergap, southwest of Denver, Colorado, USA) 11
Dakota Sandstone (Lower Cretaceous; Turkey Creek Watergap, southwest of Denver, Colorado, USA) 11
by James St. John

クリエイティブ・コモンズ 表示 2.1

DSC00145
DSC00145
by Bassett's Irregular Adventures

クリエイティブ・コモンズ 表示-改変禁止 2.1


Dinosaur tracks (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 35
Dinosaur tracks (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 35
by James St. John

クリエイティブ・コモンズ 表示 2.1

Crocodilian footprint (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 10
Crocodilian footprint (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 10
by James St. John

クリエイティブ・コモンズ 表示 2.1

Dakota Sandstone (Lower Cretaceous; Turkey Creek Watergap, southwest of Denver, Colorado, USA) 13
Dakota Sandstone (Lower Cretaceous; Turkey Creek Watergap, southwest of Denver, 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) 57
Sauropod dinosaur footprint in sandstone (Morrison Formation, Upper Jurassic, western side of Dinosaur Ridge, Colorado, USA) 57
by James St. John

クリエイティブ・コモンズ 表示 2.1

The Portage
The Portage
by jsalita

クリエイティブ・コモンズ 表示-改変禁止 2.1

Sauropod dinosaur footprint in sandstone (Morrison Formation, Upper Jurassic, western side of Dinosaur Ridge, Colorado, USA) 20
Sauropod dinosaur footprint in sandstone (Morrison Formation, Upper Jurassic, western side of Dinosaur Ridge, Colorado, USA) 20
by James St. John

クリエイティブ・コモンズ 表示 2.1


Oreocarya sobolifera - Montana cryptantha
Oreocarya sobolifera - Montana cryptantha
by Matt Lavin

クリエイティブ・コモンズ 表示-継承 2.1

Dinosaur tracks (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 77
Dinosaur tracks (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 77
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) 5
Crocodilian claw scratch marks (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 5
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) 21
Sauropod dinosaur footprint in sandstone (Morrison Formation, Upper Jurassic, western side of Dinosaur Ridge, Colorado, USA) 21
by James St. John

クリエイティブ・コモンズ 表示 2.1

Father & Son
Father & Son
by Corey Ann

クリエイティブ・コモンズ 表示-改変禁止 2.1

Caririchnium leonardii dinosaur tracks (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 4
Caririchnium leonardii dinosaur tracks (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


Crocodilian claw scratch marks (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 3
Crocodilian claw scratch marks (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 3
by James St. John

クリエイティブ・コモンズ 表示 2.1

PA162546_coyote
PA162546_coyote
by gregor_y

クリエイティブ・コモンズ 表示-継承 2.1

Sauropod dinosaur footprint in sandstone (Morrison Formation, Upper Jurassic, western side of Dinosaur Ridge, Colorado, USA) 58
Sauropod dinosaur footprint in sandstone (Morrison Formation, Upper Jurassic, western side of Dinosaur Ridge, Colorado, USA) 58
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) 75
Sauropod dinosaur footprint in sandstone (Morrison Formation, Upper Jurassic, western side of Dinosaur Ridge, Colorado, USA) 75
by James St. John

クリエイティブ・コモンズ 表示 2.1

Looking East from Dakota Ridge Hogback
Looking East from Dakota Ridge Hogback
by Eric Lumsden

クリエイティブ・コモンズ 表示-改変禁止 2.1

Skyline Drive: South Fork Shenandoah Valley
Skyline Drive: South Fork Shenandoah Valley
by selkovjr

クリエイティブ・コモンズ 表示 2.1



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