Discovered in 2010 in Montana’s famed Hell Creek Formation of the late Cretaceous, the 40-foot-long fossil took four years to excavate and prepare. Photography by Gerd Ludwig ...

Monument Rocks Chalk Pyramids in Kansas offer one of the best fossil hunting experiences in the Midwest. Explore ancient sea ...

New Mexico geologist and author Magdalena Sandoval Donahue discusses the interesting geology of the Santa Fe National Forest ...