Fallen Boulder Reveals 313 Million-Year-Old Fossil Footprints At Grand Canyon
The side-by-side tracks of two ancient animals have been called "by far the oldest vertebrate tracks in Grand Canyon."
February 12th is Darwin Day, an international, annual celebration commemorating the birthday of Charles Darwin, the English naturalist and geologist made famous for his theory of evolution by natural selection. We've all heard of Darwin, but what do we know about him?
Recently, Drs. Lindsay Zanno and Victoria Arbour took a brief scouting expedition to New Mexico, looking for dinosaur fossils exposed at the surface of 90-million-year-old rock. Only three North American dinosaur species have been identified from this time period. They want to find more.