Paleontologists have found tens of thousands of dinosaur tracks in South America, which offers evidence as to which species were traveling via an ancient coastline.

Theropods once trekked along a “dinosaur freeway” that stretched across a shoreline in what is now Bolivia, according to a new study.

Researchers have counted 16,600 fossilized dinosaur footprints and 1,378 swim tracks at a site in Bolivia that showcase a ...