Keywords: Shakopee Formation SE Minnesota.jpg en Shakopee Formation Lower Ordovician exposed in Hernke's Rock Quarry near Cannon Falls SE Minnesota 2016-07-28 13 19 44 own Wilson44691 other versions 44 393311 -92 909744 heading 122 88362068965517 cc-zero Shakopee Minnesota Limestone Geology of Minnesota Ordovician geology of North America |