Dinosaur, mammal tracks discovered in NASA’s backyard

NASA usually has its eye on the distant heavens, but a recent discovery was made—literally—in its own backyard. In 2012, an amateur fossil hunter found a slab of rock covered in ancient footprints on the campus of NASA’s Goddard Space Flight Center in Greenbelt, Maryland, The Washington Post reports. After analyzing it, researchers found that the 110-million-year-old rock contained 70 tracks in total, some made by dinosaurs—sauropods, pterosaurs, theropods—and others made by tiny, dinosaur-era mammals. The find, described yesterday in Scientific Reports, is important because few mammal tracks from that era have survived.


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