Keywords: Aviculopecten subcardiformis01.JPG Aviculopecten subcardiformis from the Logan Formation Mississippian Ohio Photograph taken by Mark A Wilson Department of Geology The College of Wooster http //www3 wooster edu/geology/MWilson html 2007-10-21 Wilson44691 wikipedia en Wilson44691 original upload log page en wikipedia Aviculopecten_subcardiformis01 JPG 2007-10-21 18 15 Wilson44691 1536×1314×8 653934 bytes <nowiki>Photograph taken by Mark A Wilson Department of Geology The College of Wooster http //www3 wooster edu/geology/MWilson html</nowiki> Carboniferous fossils from Ohio Aviculopecten subcardiformis Pectinidae fossils Mississippian fossils |