A CRETACEOUS SANDSTONE AND LEAF FOSSIL LOCALITY IN WESTERN WISCONSIN
Isolated deposits such as this in western Wisconsin have been assigned to the Windrow Formation, and given a Cretaceous age based on lithologic and stratigraphic similarities with better-known and better-dated deposits to the west in Minnesota. We tentatively accept this age assignment, and further support it with the recovery of imprints of two leaves and numerous wood fragments in the sandstone. One leaf has tentatively been identified as belonging to the Lauraceae, which is a fairly common element in Cretaceous floras. To our knowledge, this is the first report of Cretaceous leaf fossils from Wisconsin.