ordovician

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詳しくはクリエイティブ・コモンズ・ライセンスの利用についてをご覧ください。

Looking north
by Kyle Hartshorn

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/14107586497.html" target="_blank"><img src="http://farm4.static.flickr.com/3701/14107586497_89fa2c852e_m.jpg" alt="" /></a><br />Looking north / Kyle Hartshorn</span>

サイズ変更など

Outcrop
by Kyle Hartshorn

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/14292123272.html" target="_blank"><img src="http://farm4.static.flickr.com/3681/14292123272_ba12e682b7_m.jpg" alt="" /></a><br />Outcrop / Kyle Hartshorn</span>

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Brachiopods in limestone (Waynesville Formation, Upper Ordovician; Roaring Run, Warren County, Ohio, 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/42524250494.html" target="_blank"><img src="http://farm2.static.flickr.com/1808/42524250494_ffdaeedba3_m.jpg" alt="" /></a><br />Brachiopods in limestone (Waynesville Formation, Upper Ordovician; Roaring Run, Warren County, Ohio, USA) 2 / James St. John</span>

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Oncolites in fossiliferous limestone (Whitewater Formation, Upper Ordovician; Richmond South Rt. 27 roadcut, Indiana, USA) 8
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/24568527964.html" target="_blank"><img src="http://farm2.static.flickr.com/1450/24568527964_2e4b859b69_m.jpg" alt="" /></a><br />Oncolites in fossiliferous limestone (Whitewater Formation, Upper Ordovician; Richmond South Rt. 27 roadcut, Indiana, USA) 8 / James St. John</span>

サイズ変更など

Tentaculites richmondensis in limestone (Waynesville Formation, Upper Ordovician; Whistle Creek, Franklin County, Indiana, 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/50007498968.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50007498968_13d2298cd4_m.jpg" alt="" /></a><br />Tentaculites richmondensis in limestone (Waynesville Formation, Upper Ordovician; Whistle Creek, Franklin County, Indiana, USA) / James St. John</span>

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Stromatoporoid (Ashlock Formation, Upper Ordovician; Paint Lick Elementary School outcrop, Garrard County, Kentucky, USA) 21
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/31951214918.html" target="_blank"><img src="http://farm5.static.flickr.com/4890/31951214918_074e048aef_m.jpg" alt="" /></a><br />Stromatoporoid (Ashlock Formation, Upper Ordovician; Paint Lick Elementary School outcrop, Garrard County, Kentucky, USA) 21 / James St. John</span>

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Maclurites magna (fossil gastropod) in limestone (Champlain Black Marble) (Crown Point Limestone, Middle Ordovician; Vermont, 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/41123599544.html" target="_blank"><img src="http://farm1.static.flickr.com/870/41123599544_0fb2db6eab_m.jpg" alt="" /></a><br />Maclurites magna (fossil gastropod) in limestone (Champlain Black Marble) (Crown Point Limestone, Middle Ordovician; Vermont, USA) 6 / James St. John</span>

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St. Peter Sandstone (Middle Ordovician; Graham Cave, Montgomery County, Missouri, USA) 29
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/50055814743.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50055814743_515befec48_m.jpg" alt="" /></a><br />St. Peter Sandstone (Middle Ordovician; Graham Cave, Montgomery County, Missouri, USA) 29 / James St. John</span>

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Tetragraptus fossil graptolites (Bendigonian Formation, Lower Ordovician; Spring Gully, Bendigo, Victoria, Australia) 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/46851343304.html" target="_blank"><img src="http://farm8.static.flickr.com/7896/46851343304_f2f164e646_m.jpg" alt="" /></a><br />Tetragraptus fossil graptolites (Bendigonian Formation, Lower Ordovician; Spring Gully, Bendigo, Victoria, Australia) 7 / James St. John</span>

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DSC_2458
by Kyle Hartshorn

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/23051825026.html" target="_blank"><img src="http://farm1.static.flickr.com/649/23051825026_77c1e20559_m.jpg" alt="" /></a><br />DSC_2458 / Kyle Hartshorn</span>

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Signage and outcrop
by Kyle Hartshorn

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/14292060892.html" target="_blank"><img src="http://farm4.static.flickr.com/3742/14292060892_17061a20e5_m.jpg" alt="" /></a><br />Signage and outcrop / Kyle Hartshorn</span>

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Rhododendron sp. (Newark, Ohio, USA) 19
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/52913903880.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/52913903880_ce13ef4601_m.jpg" alt="" /></a><br />Rhododendron sp. (Newark, Ohio, USA) 19 / James St. John</span>

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Meta-gabbro (Kings River Ophiolite, Early Ordovician, ~484 Ma; Fresno County, California, 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/54374612658.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/54374612658_bd14e12286_m.jpg" alt="" /></a><br />Meta-gabbro (Kings River Ophiolite, Early Ordovician, ~484 Ma; Fresno County, California, USA) 3 / James St. John</span>

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Corundum amphibolite (Chunky Gal Complex, Ordovician, ~458 Ma; Chunky Gal Mountain, Blue Ridge, North Carolina, 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/49942387323.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49942387323_1676b49409_m.jpg" alt="" /></a><br />Corundum amphibolite (Chunky Gal Complex, Ordovician, ~458 Ma; Chunky Gal Mountain, Blue Ridge, North Carolina, USA) 1 / James St. John</span>

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Travertine soda straw stalactites in dolostone network cave (Crystal Cave, near Spring Valley, Wisconsin, USA) 12
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/18955632292.html" target="_blank"><img src="http://farm4.static.flickr.com/3880/18955632292_f5d6c232dd_m.jpg" alt="" /></a><br />Travertine soda straw stalactites in dolostone network cave (Crystal Cave, near Spring Valley, Wisconsin, USA) 12 / James St. John</span>

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20170622_1202
by MostlyDross

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/34632652064.html" target="_blank"><img src="http://farm5.static.flickr.com/4231/34632652064_c302bd9370_m.jpg" alt="" /></a><br />20170622_1202 / MostlyDross</span>

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Paupospira bowdeni (fossil snail) (Richmondian Stage, Upper Ordovician; Southgate Hill roadcut, Indiana, 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/33839128614.html" target="_blank"><img src="http://farm5.static.flickr.com/4159/33839128614_e284991deb_m.jpg" alt="" /></a><br />Paupospira bowdeni (fossil snail) (Richmondian Stage, Upper Ordovician; Southgate Hill roadcut, Indiana, USA) 1 / James St. John</span>

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St. Peter Sandstone (Middle Ordovician; Graham Cave, Montgomery County, Missouri, 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/50052099271.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50052099271_df9363fa73_m.jpg" alt="" /></a><br />St. Peter Sandstone (Middle Ordovician; Graham Cave, Montgomery County, Missouri, USA) 11 / James St. John</span>

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Terrill
by Kyle Hartshorn

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/14264460876.html" target="_blank"><img src="http://farm3.static.flickr.com/2935/14264460876_6c143c7b03_m.jpg" alt="" /></a><br />Terrill / Kyle Hartshorn</span>

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Catellocaula vallata bioimmuration structure in a fossil bryozoan (Kope Formation, Upper Ordovician; Route 9 roadcut near Alexandria, Kentucky, 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/31337957971.html" target="_blank"><img src="http://farm6.static.flickr.com/5481/31337957971_650eb2da32_m.jpg" alt="" /></a><br />Catellocaula vallata bioimmuration structure in a fossil bryozoan (Kope Formation, Upper Ordovician; Route 9 roadcut near Alexandria, Kentucky, USA) / James St. John</span>

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Pycnocrinus dyeri (fossil crinoids) (Arnheim Formation, Upper Ordovician; Dent, Ohio, 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/28373568407.html" target="_blank"><img src="http://farm2.static.flickr.com/1782/28373568407_b888b69671_m.jpg" alt="" /></a><br />Pycnocrinus dyeri (fossil crinoids) (Arnheim Formation, Upper Ordovician; Dent, Ohio, USA) 3 / James St. John</span>

サイズ変更など

Petroxestes pera bivalve borings on limestone hardground (Upper Ordovician; Cincinnatian area, 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/51189668654.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/51189668654_71cc7c4c8d_m.jpg" alt="" /></a><br />Petroxestes pera bivalve borings on limestone hardground (Upper Ordovician; Cincinnatian area, USA) 5 / James St. John</span>

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Fustiglyphus trace fossil (Upper Ordovician; Caesar Creek Lake's emergency spillway, Warren County, Ohio, 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/50658787793.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50658787793_99aaa2ae05_m.jpg" alt="" /></a><br />Fustiglyphus trace fossil (Upper Ordovician; Caesar Creek Lake's emergency spillway, Warren County, Ohio, USA) 1 / James St. John</span>

サイズ変更など

Fossiliferous limestone (Fulton Shale, Upper Ordovician; Woolcott South roadcut, Kentucky, 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/30488258664.html" target="_blank"><img src="http://farm6.static.flickr.com/5682/30488258664_490bd12bdb_m.jpg" alt="" /></a><br />Fossiliferous limestone (Fulton Shale, Upper Ordovician; Woolcott South roadcut, Kentucky, USA) 1 / James St. John</span>

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Low bank outcrop
by Kyle Hartshorn

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/14383383891.html" target="_blank"><img src="http://farm4.static.flickr.com/3882/14383383891_b7ff2a10f1_m.jpg" alt="" /></a><br />Low bank outcrop / Kyle Hartshorn</span>

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Trace fossils in limestone (Waynesville Formation, Upper Ordovician; Roaring Run, Warren County, Ohio, 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/43193367342.html" target="_blank"><img src="http://farm2.static.flickr.com/1830/43193367342_c012c12c96_m.jpg" alt="" /></a><br />Trace fossils in limestone (Waynesville Formation, Upper Ordovician; Roaring Run, Warren County, Ohio, USA) 4 / James St. John</span>

サイズ変更など

Ectenocrinus simplex (fossil crinoid heads) (Kope Formation, Upper Ordovician; Carrollton, Kentucky, 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/52888498200.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/52888498200_8ea164b882_m.jpg" alt="" /></a><br />Ectenocrinus simplex (fossil crinoid heads) (Kope Formation, Upper Ordovician; Carrollton, Kentucky, USA) 2 / James St. John</span>

サイズ変更など

Fort Payne Formation-Chattanooga Shale-Cumberland Formation; Burkesville West Rt. 90 roadcut, Kentucky, 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/40541720850.html" target="_blank"><img src="http://farm2.static.flickr.com/1743/40541720850_0511a0e188_m.jpg" alt="" /></a><br />Fort Payne Formation-Chattanooga Shale-Cumberland Formation; Burkesville West Rt. 90 roadcut, Kentucky, USA) 4 / James St. John</span>

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Large cave room in dolostone (Prairie du Chien Group, Ordovician; upper level of Crystal Cave, near Spring Valley, Wisconsin, 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/18321911043.html" target="_blank"><img src="http://farm1.static.flickr.com/313/18321911043_8bd8e7b2b4_m.jpg" alt="" /></a><br />Large cave room in dolostone (Prairie du Chien Group, Ordovician; upper level of Crystal Cave, near Spring Valley, Wisconsin, USA) / James St. John</span>

サイズ変更など

Ordovician-Silurian unconformity section (Dunkinsville Southwest roadcut, Ohio, 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/36508188162.html" target="_blank"><img src="http://farm5.static.flickr.com/4332/36508188162_ca6d3747f6_m.jpg" alt="" /></a><br />Ordovician-Silurian unconformity section (Dunkinsville Southwest roadcut, Ohio, USA) 1 / James St. John</span>

サイズ変更など

Outcrop
by Kyle Hartshorn

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/14287099664.html" target="_blank"><img src="http://farm3.static.flickr.com/2937/14287099664_2f8ca9ae01_m.jpg" alt="" /></a><br />Outcrop / Kyle Hartshorn</span>

サイズ変更など

Outcrop
by Kyle Hartshorn

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/14285592122.html" target="_blank"><img src="http://farm3.static.flickr.com/2933/14285592122_a215b47792_m.jpg" alt="" /></a><br />Outcrop / Kyle Hartshorn</span>

サイズ変更など

Maclurites magna (fossil gastropods) in limestone (Champlain Black Marble) (Crown Point Limestone, Middle Ordovician; Vermont, 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/27971545868.html" target="_blank"><img src="http://farm1.static.flickr.com/955/27971545868_87e213e14c_m.jpg" alt="" /></a><br />Maclurites magna (fossil gastropods) in limestone (Champlain Black Marble) (Crown Point Limestone, Middle Ordovician; Vermont, USA) 4 / James St. John</span>

サイズ変更など

Xenocrinus baeri (fossil crinoid) (Whitewater Formation, Upper Ordovician; Caesar Creek State Park, Warren County, Ohio, 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/28342878778.html" target="_blank"><img src="http://farm1.static.flickr.com/970/28342878778_2dc7df2070_m.jpg" alt="" /></a><br />Xenocrinus baeri (fossil crinoid) (Whitewater Formation, Upper Ordovician; Caesar Creek State Park, Warren County, Ohio, USA) / James St. John</span>

サイズ変更など

Isotelus maximus (fossil trilobite genal spine) (Liberty Formation, Upper Ordovician; Caesar Creek Lake's emergency spillway, Warren County, Ohio, 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/49993966851.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49993966851_89cd9b2f55_m.jpg" alt="" /></a><br />Isotelus maximus (fossil trilobite genal spine) (Liberty Formation, Upper Ordovician; Caesar Creek Lake's emergency spillway, Warren County, Ohio, USA) / James St. John</span>

サイズ変更など

Shattercone (quarry at Kentland Dome Impact Structure, Indiana, 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/52801758331.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/52801758331_68044faca8_m.jpg" alt="" /></a><br />Shattercone (quarry at Kentland Dome Impact Structure, Indiana, USA) 1 / James St. John</span>

サイズ変更など

Diorama of a Cincinnatian seafloor (Late Ordovician) - crinoids
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/44703153735.html" target="_blank"><img src="http://farm2.static.flickr.com/1958/44703153735_767b7b8648_m.jpg" alt="" /></a><br />Diorama of a Cincinnatian seafloor (Late Ordovician) - crinoids / James St. John</span>

サイズ変更など

Promopalaeaster sp. (fossil starfish) (Richmond Group, Upper Ordovician; Caesar Creek Lake’s emergency spillway, Ohio, 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/8473060485.html" target="_blank"><img src="http://farm9.static.flickr.com/8247/8473060485_c12757fabc_m.jpg" alt="" /></a><br />Promopalaeaster sp. (fossil starfish) (Richmond Group, Upper Ordovician; Caesar Creek Lake’s emergency spillway, Ohio, USA) 3 / James St. John</span>

サイズ変更など

Anthodites (Skyline Caverns, Front Royal, Virginia, USA) 21
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/27239507753.html" target="_blank"><img src="http://farm8.static.flickr.com/7384/27239507753_d303472805_m.jpg" alt="" /></a><br />Anthodites (Skyline Caverns, Front Royal, Virginia, USA) 21 / James St. John</span>

サイズ変更など

Paupospira bowdeni (fossil snail) (Richmondian Stage, Upper Ordovician; Southgate Hill roadcut, Indiana, 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/34296713350.html" target="_blank"><img src="http://farm5.static.flickr.com/4162/34296713350_a75867a377_m.jpg" alt="" /></a><br />Paupospira bowdeni (fossil snail) (Richmondian Stage, Upper Ordovician; Southgate Hill roadcut, Indiana, USA) 3 / James St. John</span>

サイズ変更など

Stromatoporoid (Ashlock Formation, Upper Ordovician; Paint Lick Elementary School outcrop, Garrard County, Kentucky, 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/30882191817.html" target="_blank"><img src="http://farm5.static.flickr.com/4808/30882191817_d895ea8755_m.jpg" alt="" /></a><br />Stromatoporoid (Ashlock Formation, Upper Ordovician; Paint Lick Elementary School outcrop, Garrard County, Kentucky, USA) 27 / James St. John</span>

サイズ変更など

Bedding in cave wall (Prairie du Chien Group, Ordovician; Crystal Cave, near Spring Valley, Wisconsin, 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/18955931772.html" target="_blank"><img src="http://farm1.static.flickr.com/552/18955931772_c172092581_m.jpg" alt="" /></a><br />Bedding in cave wall (Prairie du Chien Group, Ordovician; Crystal Cave, near Spring Valley, Wisconsin, USA) 5 / James St. John</span>

サイズ変更など

DSC_9708
by Kyle Hartshorn

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/21826815882.html" target="_blank"><img src="http://farm1.static.flickr.com/568/21826815882_ebe7d1f85c_m.jpg" alt="" /></a><br />DSC_9708 / Kyle Hartshorn</span>

サイズ変更など

Cocos nucifera (coconut palms) (Eleuthera Island, Bahamas) 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/15599504180.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/15599504180_c96e4f6e20_m.jpg" alt="" /></a><br />Cocos nucifera (coconut palms) (Eleuthera Island, Bahamas) 1 / James St. John</span>

サイズ変更など

Quartzite
by Paul J. Morris

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/3325507755.html" target="_blank"><img src="http://farm4.static.flickr.com/3622/3325507755_f9e1813d63_m.jpg" alt="" /></a><br />Quartzite / Paul J. Morris</span>

サイズ変更など

Petroxestes pera bivalve borings on limestone hardground (Upper Ordovician; Cincinnatian area, 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/51189965165.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/51189965165_53b57c885e_m.jpg" alt="" /></a><br />Petroxestes pera bivalve borings on limestone hardground (Upper Ordovician; Cincinnatian area, USA) 7 / James St. John</span>

サイズ変更など

Fisherites reticulatus fossil algae (Kimmswick Formation, Upper Ordovician; Pike County, Missouri, 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/27209184427.html" target="_blank"><img src="http://farm1.static.flickr.com/963/27209184427_7eccfe0902_m.jpg" alt="" /></a><br />Fisherites reticulatus fossil algae (Kimmswick Formation, Upper Ordovician; Pike County, Missouri, USA) / James St. John</span>

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Impact breccia (Middle Ordovician; Hummeln Impact Structure, Sweden) 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/50903890517.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50903890517_584e51fe61_m.jpg" alt="" /></a><br />Impact breccia (Middle Ordovician; Hummeln Impact Structure, Sweden) 5 / James St. John</span>

サイズ変更など

Stromatoporoid (Ashlock Formation, Upper Ordovician; Paint Lick Elementary School outcrop, Garrard County, Kentucky, 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/30882199577.html" target="_blank"><img src="http://farm5.static.flickr.com/4875/30882199577_6b3cde3313_m.jpg" alt="" /></a><br />Stromatoporoid (Ashlock Formation, Upper Ordovician; Paint Lick Elementary School outcrop, Garrard County, Kentucky, USA) 25 / James St. John</span>

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Fossil bivalve (Whitewater Formation, Upper Ordovician; Route 27 roadcut south of Richmond, Indiana, 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/50017261293.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50017261293_43d10cb070_m.jpg" alt="" /></a><br />Fossil bivalve (Whitewater Formation, Upper Ordovician; Route 27 roadcut south of Richmond, Indiana, USA) 5 / James St. John</span>

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Joint-controlled passage in dolostone cave (Prairie du Chien Group, Ordovician; Crystal Cave, near Spring Valley, Wisconsin, 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/18774268949.html" target="_blank"><img src="http://farm1.static.flickr.com/399/18774268949_6cb69f1081_m.jpg" alt="" /></a><br />Joint-controlled passage in dolostone cave (Prairie du Chien Group, Ordovician; Crystal Cave, near Spring Valley, Wisconsin, USA) 5 / James St. John</span>

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Trilobite in black shale (Jigunsan Formation, Middle Ordovician; Seokgaejae section, Gangwon Province, South Korea) 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/50744083311.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50744083311_0176acd04a_m.jpg" alt="" /></a><br />Trilobite in black shale (Jigunsan Formation, Middle Ordovician; Seokgaejae section, Gangwon Province, South Korea) 6 / James St. John</span>

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20130311_6294
by MostlyDross

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/8549439919.html" target="_blank"><img src="http://farm9.static.flickr.com/8527/8549439919_4543edea82_m.jpg" alt="" /></a><br />20130311_6294 / MostlyDross</span>

サイズ変更など

Stromatoporoid (Ashlock Formation, Upper Ordovician; Paint Lick Elementary School outcrop, Garrard County, Kentucky, 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/45821802351.html" target="_blank"><img src="http://farm5.static.flickr.com/4816/45821802351_085bcbfd1b_m.jpg" alt="" /></a><br />Stromatoporoid (Ashlock Formation, Upper Ordovician; Paint Lick Elementary School outcrop, Garrard County, Kentucky, USA) 1 / James St. John</span>

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Alethopteris sp. (fossil seed fern foliage) (Pennsylvanian; probably St. Clair, Pennsylvania, 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/49523932237.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49523932237_4201601629_m.jpg" alt="" /></a><br />Alethopteris sp. (fossil seed fern foliage) (Pennsylvanian; probably St. Clair, Pennsylvania, USA) / James St. John</span>

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Schist (Hartland Formation, Cambrian-Ordovician; Manhattan, New York State, 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/51943234733.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/51943234733_71d0091f4f_m.jpg" alt="" /></a><br />Schist (Hartland Formation, Cambrian-Ordovician; Manhattan, New York State, USA) 9 / James St. John</span>

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Serpentinite (East Dover Ultramafic Body, Ordovician; roadcut southwest of East Dover, Vermont, 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/49644705338.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49644705338_4d5d57dac7_m.jpg" alt="" /></a><br />Serpentinite (East Dover Ultramafic Body, Ordovician; roadcut southwest of East Dover, Vermont, USA) 3 / James St. John</span>

サイズ変更など

Pycnocrinus dyeri (fossil crinoids) (Arnheim Formation, Upper Ordovician; Dent, Ohio, USA) 12
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/53729078772.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/53729078772_7c08679187_m.jpg" alt="" /></a><br />Pycnocrinus dyeri (fossil crinoids) (Arnheim Formation, Upper Ordovician; Dent, Ohio, USA) 12 / James St. John</span>

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Ectenocrinus simplex crinoid stems in fossiliferous limestone (Fulton Shale, Upper Ordovician; Woolcott South roadcut, Kentucky, 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/31415408786.html" target="_blank"><img src="http://farm6.static.flickr.com/5730/31415408786_cb12616c68_m.jpg" alt="" /></a><br />Ectenocrinus simplex crinoid stems in fossiliferous limestone (Fulton Shale, Upper Ordovician; Woolcott South roadcut, Kentucky, USA) 2 / James St. John</span>

サイズ変更など

Diplocraterion trace fossils in limestone (Fairview Formation, Upper Ordovician; Maysville West roadcut, Kentucky, 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/42464907775.html" target="_blank"><img src="http://farm1.static.flickr.com/842/42464907775_6cb17ab239_m.jpg" alt="" /></a><br />Diplocraterion trace fossils in limestone (Fairview Formation, Upper Ordovician; Maysville West roadcut, Kentucky, USA) 3 / James St. John</span>

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