Cast of Cretaceous-era Footprints (2 of 2) (IMAGE)

NASA/Goddard Space Flight Center

Cast of Cretaceous-era Footprints (2 of 2)

Caption

Detail view of a cast from the sandstone slab imprinted with more than 70 dinosaur and mammal tracks discovered at NASA's Goddard Space Flight Center in Greenbelt, Maryland.

Credit

NASA's Goddard Space Flight Center/Rebecca Roth

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