Photo of the Day

Picture of sunset over three-toed dinosaur fossil tracks in Argentina
August 2, 2021

Fossil Tracks

Three-toed dinosaur fossil tracks show where Limayichnus major once roamed in southern Argentina. This picture originally appeared in the December 1997 issue, in a story following a group of paleontologists working to find Patagonia's dinosaurs.
Photograph by Robert Clark, Nat Geo Image Collection

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