A spectacular 150-million-year-old trail of more than 130 footprints captures a giant sauropod making a complete loop before continuing on its way. Its uneven stride hints that the long-necked dinosaur may have been walking with a limp.

Millions of years before roads connected modern cities, dinosaurs were already following well-worn routes across ancient landscapes. A remarkable fossil site in central Bolivia…

A spectacular 150-million-year-old trail of more than 130 footprints captures a giant sauropod making a complete loop before continuing on its way. Its uneven stride hints that…