Keywords: Stromatoporoid1 Keyser Formation.jpg en Stromatoporoids in the en Silurian- en Devonian en Keyser Formation Old Eldorado Quarry at Mile Marker 30 along en Interstate 99/US220 in en Blair County Pennsylvania south of the Plank Road Exit on the east side of the road Taken 2003 2010-07-31 11 03 21 UTC Original uploaded at 2010-03-08 14 10 13 Original uploaded on en wikipedia Original uploaded by Jstuby Transfered by Herve1729 en Stromatoporoids in the en Silurian- en Devonian en Keyser Formation Old Eldorado Quarry at Mile Marker 30 along en Interstate 99/US220 in en Blair County Pennsylvania south of the Plank Road Exit on the east side of the road Taken 2003 Original upload log page en wikipedia Stromatoporoid1_Keyser_Formation jpg Upload date User Bytes Dimensions Comment 2010-03-08 14 10 13 Jstuby 195884 678×472 <small><nowiki>Stromatoporoids in the Silurian-Devonian Keyser Formation Old Eldorado Quarry at Mile Marker 30 along I-99/US220 in Blair County Pennsylvania south of the Plank Road Exit on the east side of the road Taken 2003 </nowiki></small> Stromatoporoidea Devonian geology Rock formations in the United States Stratigraphy Geology of Pennsylvania Geology of Virginia Geology of West Virginia Limestone Silurian |