July 05, 2007
This photo show dinosaur footprints (a type of raptor) found in the Keyenta Formation, a few miles south of Moab, Utah. These footprints seem to be castings made of a different colored mud. Both the footprint and the casting are now a hard sandstone, and they're on a flat surface exposed to rain and snow. Many dinosaur footprints around Moab are found in the Morrison Formation, which is millions of years younger than the Kayenta Formation. The geological layers in the Moab area are in descending age; Morrison, Entrada, Navajo, and Kayenta. Photo taken on April 8, 2007.