Dinosaur and Mammal Tracks Found Together February 1, 2018 | David F. Coppedge In what is being called the mother lode of Cretaceous tracks, mammals, dinosaurs and pterosaurs left their prints in a table-sized rock. Of all places: at Goddard Space Flight Center in Maryland, a property representing the cutting edge of human technology, dinosaurs left their mark. Ray Stanford was dropping off his wife at work when he noticed an unusual rock outcrop. As an amateur paleontologist, he looked and saw a dinosaur track, so he began digging. Soon he had an 8′ x 3′ slab of rock that...