Two men charged with destroying a rock formation in Nevada last year are facing up to a year in prison after a federal jury ...

A view from the Sofular excavation site showing fossil distribution within a sandstone layer composed of reworked volcanic material. This deposit overlies a lapilli tuff layer dated to 8.42 million ...

A shallow sea advances and retreats several times during this period, leaving behind the layers named Kaibab Limestone, Toroweap Formation, and Hermit Shale. The Coconino Sandstone layer was ...