A nearly complete 90-million-year-old dinosaur fossil from Patagonia, Alnashetri, reveals how alvarezsaurs evolved and shrank over time.

Only one specimen of Alcovasaurus has ever been found, named for the tiny Wyoming town of Alcova, where it was discovered ...

A blade-crested Spinosaurus discovered in the Sahara is rewriting the final chapter of dinosaur evolution. A study published in Science reports the discovery of Spinosaurus mirabilis, a newly ...

Explore ancient dinosaur tracks at Red Fleet State Park, Utah, where footprints from the Early Jurassic period offer a ...