Keywords: Cretaceous hardground.jpg Cretaceous hardground from Texas with encrusting oysters and borings Photograph taken by Mark A Wilson Department of Geology The College of Wooster http //www3 wooster edu/geology/MWilson html 2007-12-27 Wilson44691 wikipedia en Wilson44691 original upload log page en wikipedia CretHdgd01 jpg 2007-12-27 15 32 Wilson44691 1000×750×8 320368 bytes <nowiki>Photograph taken by Mark A Wilson Department of Geology The College of Wooster http //www3 wooster edu/geology/MWilson html</nowiki> original upload log wikitable date/time username resolution size edit summary ---- 2008-12-25T22 45 51Z User Wilson44691 1000×750 307 23Kb <nowiki> </nowiki> ---- 2008-03-31T01 00 25Z User File Upload Bot Magnus Manske 1000×750 312 86Kb <nowiki> en wikipedia Photograph taken by Mark A Wilson Department of Geology The College of Wooster http //www wooster edu/geology/MWilson html Transferred from http //en wikipedia org en wik</nowiki> Limestone Bioerosion Hardground Cretaceous geology Geology of Texas |