cretaceous

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Life in the Cretaceous Seas
by Ryan Somma

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/3124904061.html" target="_blank"><img src="http://farm4.static.flickr.com/3222/3124904061_b8f5340579_m.jpg" alt="" /></a><br />Life in the Cretaceous Seas / Ryan Somma</span>

サイズ変更など

Pyrrhotite crystal (Dalnegorsk Skarn Deposit, Late Cretaceous, 70-90 Ma; Dalnegorsk, Russia) 4
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/18263429053.html" target="_blank"><img src="http://farm1.static.flickr.com/545/18263429053_ae20a579d2_m.jpg" alt="" /></a><br />Pyrrhotite crystal (Dalnegorsk Skarn Deposit, Late Cretaceous, 70-90 Ma; Dalnegorsk, Russia) 4 / James St. John</span>

サイズ変更など

Fossil wood impression (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 11
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/52620051547.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/52620051547_973a2b2205_m.jpg" alt="" /></a><br />Fossil wood impression (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 11 / James St. John</span>

サイズ変更など

Chalk (Annona Chalk, Upper Cretaceous; White Cliffs of the Little River, Arkansas, USA)
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/40795385595.html" target="_blank"><img src="http://farm1.static.flickr.com/978/40795385595_3df4fa259e_m.jpg" alt="" /></a><br />Chalk (Annona Chalk, Upper Cretaceous; White Cliffs of the Little River, Arkansas, USA) / James St. John</span>

サイズ変更など

Oncolitic limestone (Fredericksburg Group, Lower Cretaceous; Odessa Impact Crater, Texas, USA) 3
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/8284753447.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/8284753447_0649738b03_m.jpg" alt="" /></a><br />Oncolitic limestone (Fredericksburg Group, Lower Cretaceous; Odessa Impact Crater, Texas, USA) 3 / James St. John</span>

サイズ変更など

Ironstone ventifacts (Ericson Sandstone, Upper Cretaceous; near Zirkel Mesa, Leucite Hills, Wyoming, USA) 1
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/48933075781.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48933075781_d06761c212_m.jpg" alt="" /></a><br />Ironstone ventifacts (Ericson Sandstone, Upper Cretaceous; near Zirkel Mesa, Leucite Hills, Wyoming, USA) 1 / James St. John</span>

サイズ変更など

Granodiorite (Tobacco Root Batholith, Late Cretaceous, 71-74 Ma; Norris South roadcut, Madison County, Montana, USA) 6
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/31755739348.html" target="_blank"><img src="http://farm2.static.flickr.com/1963/31755739348_75fabdab47_m.jpg" alt="" /></a><br />Granodiorite (Tobacco Root Batholith, Late Cretaceous, 71-74 Ma; Norris South roadcut, Madison County, Montana, USA) 6 / James St. John</span>

サイズ変更など

Aplite dike in Butte Quartz Monzonite (Late Cretaceous, 76 Ma; Orphan Boy Mine, Butte, Montana, USA) 3
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/51010864656.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/51010864656_52ff7ac8bd_m.jpg" alt="" /></a><br />Aplite dike in Butte Quartz Monzonite (Late Cretaceous, 76 Ma; Orphan Boy Mine, Butte, Montana, USA) 3 / James St. John</span>

サイズ変更など

Placenticeras sp. (fossil ammonite) (Pierre Shale, Upper Cretaceous; Meade County, South Dakota, USA) 1
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/50351845932.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50351845932_6582cc5664_m.jpg" alt="" /></a><br />Placenticeras sp. (fossil ammonite) (Pierre Shale, Upper Cretaceous; Meade County, South Dakota, USA) 1 / James St. John</span>

サイズ変更など

Gold-quartz-sulfide hydrothermal vein (O'Dea Vein or Irishman Vein, Late Cretaceous; Grant Mine, Fairbanks Mining District, Alaska, USA) 3
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/16965545230.html" target="_blank"><img src="http://farm8.static.flickr.com/7689/16965545230_dc63663e39_m.jpg" alt="" /></a><br />Gold-quartz-sulfide hydrothermal vein (O'Dea Vein or Irishman Vein, Late Cretaceous; Grant Mine, Fairbanks Mining District, Alaska, USA) 3 / James St. John</span>

サイズ変更など

Torosaurus latus (ceratopsian dinosaur) reconstruction with labeled muscles (Late Cretaceous; western North America)
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/51337097706.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/51337097706_be91e58dbc_m.jpg" alt="" /></a><br />Torosaurus latus (ceratopsian dinosaur) reconstruction with labeled muscles (Late Cretaceous; western North America) / James St. John</span>

サイズ変更など

Digenite (latest Cretaceous to earliest Tertiary, 62-66 Ma; Leonard Mine, Butte, Montana, USA) 1
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/18210085501.html" target="_blank"><img src="http://farm8.static.flickr.com/7737/18210085501_d1482ef2d5_m.jpg" alt="" /></a><br />Digenite (latest Cretaceous to earliest Tertiary, 62-66 Ma; Leonard Mine, Butte, Montana, USA) 1 / James St. John</span>

サイズ変更など

Garnet-pyroxene-molybdenite-scheelite skarn (Late Cretaceous, 92 Ma; Reilly Mine, Osgood Mountains, Nevada, USA) 9
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/50864296586.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50864296586_d15c2d6e83_m.jpg" alt="" /></a><br />Garnet-pyroxene-molybdenite-scheelite skarn (Late Cretaceous, 92 Ma; Reilly Mine, Osgood Mountains, Nevada, USA) 9 / James St. John</span>

サイズ変更など

Pyrrhotite crystal (Dalnegorsk Skarn Deposit, Late Cretaceous, 70-90 Ma; Dalnegorsk, Russia) 1
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/18696395810.html" target="_blank"><img src="http://farm4.static.flickr.com/3666/18696395810_34cca9a8d9_m.jpg" alt="" /></a><br />Pyrrhotite crystal (Dalnegorsk Skarn Deposit, Late Cretaceous, 70-90 Ma; Dalnegorsk, Russia) 1 / James St. John</span>

サイズ変更など

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

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/21589228633.html" target="_blank"><img src="http://farm6.static.flickr.com/5677/21589228633_95b3527a21_m.jpg" alt="" /></a><br />Dinosaur tracks (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 3 / James St. John</span>

サイズ変更など

Spheroidal weathering (Butte Quartz Monzonite, Late Cretaceous, 76 Ma; north of Butte, Montana, USA) 10
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/50973352718.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50973352718_2c6b53fffa_m.jpg" alt="" /></a><br />Spheroidal weathering (Butte Quartz Monzonite, Late Cretaceous, 76 Ma; north of Butte, Montana, USA) 10 / James St. John</span>

サイズ変更など

Life in the Cretaceous Seas
by Ryan Somma

クリエイティブ・コモンズ表示-継承 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/3124905705.html" target="_blank"><img src="http://farm4.static.flickr.com/3095/3124905705_4a2f5b91f1_m.jpg" alt="" /></a><br />Life in the Cretaceous Seas / Ryan Somma</span>

サイズ変更など

Dakota Sandstone (Lower Cretaceous) (Dinosaur Ridge, Colorado, USA) 34
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/52653098587.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/52653098587_759900cf4d_m.jpg" alt="" /></a><br />Dakota Sandstone (Lower Cretaceous) (Dinosaur Ridge, Colorado, USA) 34 / James St. John</span>

サイズ変更など

Precious opal vein in sandstone (Bulldog Shale, Lower Cretaceous; Andamooka Opal Fields, South Australia) 1
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/29802995415.html" target="_blank"><img src="http://farm9.static.flickr.com/8433/29802995415_b8cdcd05b1_m.jpg" alt="" /></a><br />Precious opal vein in sandstone (Bulldog Shale, Lower Cretaceous; Andamooka Opal Fields, South Australia) 1 / James St. John</span>

サイズ変更など

Uintacrinus socialis (fossil crinoids in chalk) (Niobrara Formation, Upper Cretaceous; western Kansas, USA) 31
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/35921715926.html" target="_blank"><img src="http://farm5.static.flickr.com/4298/35921715926_e9942d4dbe_m.jpg" alt="" /></a><br />Uintacrinus socialis (fossil crinoids in chalk) (Niobrara Formation, Upper Cretaceous; western Kansas, USA) 31 / James St. John</span>

サイズ変更など

Chalk & impure chalk (Smoky Hill Chalk Member, Niobrara Formation, Upper Cretaceous; Monument Rocks, Kansas, USA) 78
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/52453268917.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/52453268917_2e13f9d8c2_m.jpg" alt="" /></a><br />Chalk & impure chalk (Smoky Hill Chalk Member, Niobrara Formation, Upper Cretaceous; Monument Rocks, Kansas, USA) 78 / James St. John</span>

サイズ変更など

Frontier Sandstone (Upper Cretaceous; western Dinosaur National Monument, Utah, USA) 3
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/48685644133.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48685644133_4a31d867d0_m.jpg" alt="" /></a><br />Frontier Sandstone (Upper Cretaceous; western Dinosaur National Monument, Utah, USA) 3 / James St. John</span>

サイズ変更など

Oncolitic limestone (North Horn Formation, Upper Cretaceous to Paleocene; Birdseye Marble Quarry, south of Thistle, Utah, USA) 1
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/50536147167.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50536147167_07a1f8d234_m.jpg" alt="" /></a><br />Oncolitic limestone (North Horn Formation, Upper Cretaceous to Paleocene; Birdseye Marble Quarry, south of Thistle, Utah, USA) 1 / James St. John</span>

サイズ変更など

Coal (Menefee Formation, Upper Cretaceous; National King Coal Mine, Hay Gulch, Colorado, USA) 1
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/22690906088.html" target="_blank"><img src="http://farm6.static.flickr.com/5822/22690906088_a0f4bb7fec_m.jpg" alt="" /></a><br />Coal (Menefee Formation, Upper Cretaceous; National King Coal Mine, Hay Gulch, Colorado, USA) 1 / James St. John</span>

サイズ変更など

Ankeritic carbonatite (Chilwa Alkaline Province, Early Cretaceous, 126 Ma; Chilwa Island, Lake Chilwa, Malawi, southeastern Africa) 2
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/25831609844.html" target="_blank"><img src="http://farm2.static.flickr.com/1701/25831609844_252b2fb312_m.jpg" alt="" /></a><br />Ankeritic carbonatite (Chilwa Alkaline Province, Early Cretaceous, 126 Ma; Chilwa Island, Lake Chilwa, Malawi, southeastern Africa) 2 / James St. John</span>

サイズ変更など

Uintacrinus socialis (fossil crinoids in chalk) (Niobrara Formation, Upper Cretaceous; western Kansas, USA) 11
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/35791277022.html" target="_blank"><img src="http://farm5.static.flickr.com/4321/35791277022_bf24d59108_m.jpg" alt="" /></a><br />Uintacrinus socialis (fossil crinoids in chalk) (Niobrara Formation, Upper Cretaceous; western Kansas, USA) 11 / James St. John</span>

サイズ変更など

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

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/22022466098.html" target="_blank"><img src="http://farm1.static.flickr.com/625/22022466098_12d8b003dc_m.jpg" alt="" /></a><br />Dinosaur tracks (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 4 / James St. John</span>

サイズ変更など

Oncolitic limestone (North Horn Formation, Upper Cretaceous to Paleocene; Birdseye Marble Quarry, south of Thistle, Utah, USA) 5
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/50535993081.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50535993081_6ab1a915b1_m.jpg" alt="" /></a><br />Oncolitic limestone (North Horn Formation, Upper Cretaceous to Paleocene; Birdseye Marble Quarry, south of Thistle, Utah, USA) 5 / James St. John</span>

サイズ変更など

Fossil bird track (Lararmie Formation, Upper Cretaceous; Parfet Prehistoric Preserve, Golden, Colorado, USA) 2
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/52511817565.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/52511817565_2f2b6e1556_m.jpg" alt="" /></a><br />Fossil bird track (Lararmie Formation, Upper Cretaceous; Parfet Prehistoric Preserve, Golden, Colorado, USA) 2 / James St. John</span>

サイズ変更など

Chalk & impure chalk (Smoky Hill Chalk Member, Niobrara Formation, Upper Cretaceous; Monument Rocks, Kansas, USA) 53
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/52453791541.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/52453791541_d88d056aa4_m.jpg" alt="" /></a><br />Chalk & impure chalk (Smoky Hill Chalk Member, Niobrara Formation, Upper Cretaceous; Monument Rocks, Kansas, USA) 53 / James St. John</span>

サイズ変更など

Blairmorite (porphyritic analcime phonolite) (Crowsnest Volcanics, mid-Cretaceous, 100 Ma; near Blairmore, Alberta, Canada) 2
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/14817982467.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/14817982467_79ab29009f_m.jpg" alt="" /></a><br />Blairmorite (porphyritic analcime phonolite) (Crowsnest Volcanics, mid-Cretaceous, 100 Ma; near Blairmore, Alberta, Canada) 2 / James St. John</span>

サイズ変更など

Anzu wyliei theropod dinosaur (Hell Creek Formation, Upper Cretaceous; western Harding County, far-northwestern South Dakota, USA) 3
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/15227946127.html" target="_blank"><img src="http://farm4.static.flickr.com/3927/15227946127_98ca3133c0_m.jpg" alt="" /></a><br />Anzu wyliei theropod dinosaur (Hell Creek Formation, Upper Cretaceous; western Harding County, far-northwestern South Dakota, USA) 3 / James St. John</span>

サイズ変更など

Cretaceous Gargen
by sf-dvs

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/29335817618.html" target="_blank"><img src="http://farm2.static.flickr.com/1787/29335817618_f9375aeeaf_m.jpg" alt="" /></a><br />Cretaceous Gargen / sf-dvs</span>

サイズ変更など

Chalk & impure chalk (Smoky Hill Chalk Member, Niobrara Formation, Upper Cretaceous; Monument Rocks, Kansas, USA) 136
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/52453810741.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/52453810741_3dcb884310_m.jpg" alt="" /></a><br />Chalk & impure chalk (Smoky Hill Chalk Member, Niobrara Formation, Upper Cretaceous; Monument Rocks, Kansas, USA) 136 / James St. John</span>

サイズ変更など

that Cephalopodal thing
by subarcticmike

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/4116177645.html" target="_blank"><img src="http://farm3.static.flickr.com/2761/4116177645_48a1e48e39_m.jpg" alt="" /></a><br />that Cephalopodal thing / subarcticmike</span>

サイズ変更など

Lodestone (Magnet Cove Complex, mid-Cretaceous, 96-102 Ma; Perovskite Hill, Magnet Cove, Arkansas, USA) 4
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/50991368428.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50991368428_e31b27e10a_m.jpg" alt="" /></a><br />Lodestone (Magnet Cove Complex, mid-Cretaceous, 96-102 Ma; Perovskite Hill, Magnet Cove, Arkansas, USA) 4 / James St. John</span>

サイズ変更など

Meeteetse Formation (Upper Cretaceous; southeast of Meeteetse, Wyoming, USA) 25
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/48911405208.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48911405208_d7b3ca93d6_m.jpg" alt="" /></a><br />Meeteetse Formation (Upper Cretaceous; southeast of Meeteetse, Wyoming, USA) 25 / James St. John</span>

サイズ変更など

Tyrannosauripus pillmorei (theropod dinosaur footprint) (Raton Formation, Upper Cretaceous; Philmont Ranch tracksite, North Ponil Canyon, New Mexico, USA)
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/15352953647.html" target="_blank"><img src="http://farm6.static.flickr.com/5608/15352953647_4e184b26bf_m.jpg" alt="" /></a><br />Tyrannosauripus pillmorei (theropod dinosaur footprint) (Raton Formation, Upper Cretaceous; Philmont Ranch tracksite, North Ponil Canyon, New Mexico, USA) / James St. John</span>

サイズ変更など

Uintacrinus socialis (fossil crinoids in chalk) (Niobrara Formation, Upper Cretaceous; western Kansas, USA) 27
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/35830638831.html" target="_blank"><img src="http://farm5.static.flickr.com/4297/35830638831_bd7222b71e_m.jpg" alt="" /></a><br />Uintacrinus socialis (fossil crinoids in chalk) (Niobrara Formation, Upper Cretaceous; western Kansas, USA) 27 / James St. John</span>

サイズ変更など

Chalk & impure chalk (Smoky Hill Chalk Member, Niobrara Formation, Upper Cretaceous; Monument Rocks, Kansas, USA) 3
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/52454048269.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/52454048269_503cf8b466_m.jpg" alt="" /></a><br />Chalk & impure chalk (Smoky Hill Chalk Member, Niobrara Formation, Upper Cretaceous; Monument Rocks, Kansas, USA) 3 / James St. John</span>

サイズ変更など

Oil well at Odessa Meteorite Crater (Ector County, Texas, USA) 2
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/49662743623.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49662743623_20b80c55d2_m.jpg" alt="" /></a><br />Oil well at Odessa Meteorite Crater (Ector County, Texas, USA) 2 / James St. John</span>

サイズ変更など

Holaster simplex (fossil echinoid) (Cretaceous; Bryan County, Oklahoma, USA) 2
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/49593538598.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49593538598_13ea2390e0_m.jpg" alt="" /></a><br />Holaster simplex (fossil echinoid) (Cretaceous; Bryan County, Oklahoma, USA) 2 / James St. John</span>

サイズ変更など

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

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/52643639118.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/52643639118_a85c8016c0_m.jpg" alt="" /></a><br />Dakota Sandstone (Lower Cretaceous) (Dinosaur Ridge, Colorado, USA) 7 / James St. John</span>

サイズ変更など

...Been to Drumheller and Back!
by laszlo-photo

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/155507432.html" target="_blank"><img src="http://farm1.static.flickr.com/48/155507432_c51b65a0ea_m.jpg" alt="" /></a><br />...Been to Drumheller and Back! / laszlo-photo</span>

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Reconstruction of Xiphactinus sp. (fossil fish) (Niobrara Formation, Upper Cretaceous; Gove County, Kansas, USA)
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/33740630636.html" target="_blank"><img src="http://farm4.static.flickr.com/3857/33740630636_d00ae1f114_m.jpg" alt="" /></a><br />Reconstruction of Xiphactinus sp. (fossil fish) (Niobrara Formation, Upper Cretaceous; Gove County, Kansas, USA) / James St. John</span>

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Chalk & impure chalk (Smoky Hill Chalk Member, Niobrara Formation, Upper Cretaceous; Monument Rocks, Kansas, USA) 39
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/52454053069.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/52454053069_e5c48b1f64_m.jpg" alt="" /></a><br />Chalk & impure chalk (Smoky Hill Chalk Member, Niobrara Formation, Upper Cretaceous; Monument Rocks, Kansas, USA) 39 / James St. John</span>

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Xiphactinus sp. (fossil fish) (Niobrara Formation, Upper Cretaceous; Gove County, Kansas, USA) 2
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/33781596725.html" target="_blank"><img src="http://farm4.static.flickr.com/3741/33781596725_0279891298_m.jpg" alt="" /></a><br />Xiphactinus sp. (fossil fish) (Niobrara Formation, Upper Cretaceous; Gove County, Kansas, USA) 2 / James St. John</span>

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When an ancient animal becomes an iridescent gemstone
by jurvetson

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/54492972218.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/54492972218_3cd664cecf_m.jpg" alt="" /></a><br />When an ancient animal becomes an iridescent gemstone / jurvetson</span>

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Arietites conybeari (fossil ammonites) (Lower Jurassic; England)
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/50340194142.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50340194142_f86e018f00_m.jpg" alt="" /></a><br />Arietites conybeari (fossil ammonites) (Lower Jurassic; England) / James St. John</span>

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Ison Creek Kimberlite (Elliott County Peridotite, Late Cretaceous, 75 Ma; west of Stephens, Elliott County, Kentucky, USA) 10
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/48383015726.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48383015726_b5c3510b6c_m.jpg" alt="" /></a><br />Ison Creek Kimberlite (Elliott County Peridotite, Late Cretaceous, 75 Ma; west of Stephens, Elliott County, Kentucky, USA) 10 / James St. John</span>

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Cucullaea melhaseana (fossil bivalve) (Pee Dee Formation, Upper Cretaceous; Myrtle Beach, South Carolina, USA) 3
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/50742503243.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50742503243_a2e2d7dd2e_m.jpg" alt="" /></a><br />Cucullaea melhaseana (fossil bivalve) (Pee Dee Formation, Upper Cretaceous; Myrtle Beach, South Carolina, USA) 3 / James St. John</span>

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Uintacrinus socialis (fossil crinoids in chalk) (Niobrara Formation, Upper Cretaceous; western Kansas, USA) 32
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/35830563921.html" target="_blank"><img src="http://farm5.static.flickr.com/4301/35830563921_cde6eb4367_m.jpg" alt="" /></a><br />Uintacrinus socialis (fossil crinoids in chalk) (Niobrara Formation, Upper Cretaceous; western Kansas, USA) 32 / James St. John</span>

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Anzu wyliei theropod dinosaur (Hell Creek Formation, Upper Cretaceous; western Harding County, far-northwestern South Dakota, USA) 1
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/15227738379.html" target="_blank"><img src="http://farm4.static.flickr.com/3927/15227738379_c4f722c921_m.jpg" alt="" /></a><br />Anzu wyliei theropod dinosaur (Hell Creek Formation, Upper Cretaceous; western Harding County, far-northwestern South Dakota, USA) 1 / James St. John</span>

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Callospermophilus lateralis (golden-mantled ground squirrel) (Devils Postpile National Monument, California, USA)
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/52332508408.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/52332508408_95b825ce0a_m.jpg" alt="" /></a><br />Callospermophilus lateralis (golden-mantled ground squirrel) (Devils Postpile National Monument, California, USA) / James St. John</span>

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My Public Lands Roadtrip: Kremmling Cretaceous Ammonite Locality in BLM Colorado
by mypubliclands

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/19755798156.html" target="_blank"><img src="http://farm1.static.flickr.com/501/19755798156_9805b921aa_m.jpg" alt="" /></a><br />My Public Lands Roadtrip: Kremmling Cretaceous Ammonite Locality in BLM Colorado / mypubliclands</span>

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Nodosaur Footprint Verified
by NASA Goddard Photo and Video

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/7846745840.html" target="_blank"><img src="http://farm9.static.flickr.com/8285/7846745840_0490cf0709_m.jpg" alt="" /></a><br />Nodosaur Footprint Verified / NASA Goddard Photo and Video</span>

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Uintacrinus socialis (fossil crinoids in chalk) (Niobrara Formation, Upper Cretaceous; western Kansas, USA) 20
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/35121549884.html" target="_blank"><img src="http://farm5.static.flickr.com/4323/35121549884_a21d5c919b_m.jpg" alt="" /></a><br />Uintacrinus socialis (fossil crinoids in chalk) (Niobrara Formation, Upper Cretaceous; western Kansas, USA) 20 / James St. John</span>

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cf. Sabal (fossil palm frond) (Laramie Formation, Upper Cretaceous; Parfet Prehistoric Preserve, Golden, Colorado, USA) 20
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/52593278656.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/52593278656_85a4872fb2_m.jpg" alt="" /></a><br />cf. Sabal (fossil palm frond) (Laramie Formation, Upper Cretaceous; Parfet Prehistoric Preserve, Golden, Colorado, USA) 20 / James St. John</span>

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K-T boundary clay (Cretaceous-Tertiary boundary, 65 Ma; roadcut along Long Canyon Road, south of Trinidad Lake, southern Colorado, USA)
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/15692057568.html" target="_blank"><img src="http://farm8.static.flickr.com/7568/15692057568_1c84a39abf_m.jpg" alt="" /></a><br />K-T boundary clay (Cretaceous-Tertiary boundary, 65 Ma; roadcut along Long Canyon Road, south of Trinidad Lake, southern Colorado, USA) / James St. John</span>

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Cross-bedded sandstones (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

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/52655611735.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/52655611735_1318ff532d_m.jpg" alt="" /></a><br />Cross-bedded sandstones (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 3 / James St. John</span>

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