In an extraordinary paleontological discovery, scientists have uncovered a remarkably well-preserved dinosaur face fossil ...

Chilean paleontologists last week presented their findings on a dinosaur with a highly unusual tail. It was discovered three years ago in Patagonia, and its tail has stumped researchers.

But in real life, scientists have discovered a doppelgänger: Zuul crurivastator, a new genus and species of dinosaur with movie-monster looks. Well protectedOsteoderms—bony armor plates—cover ...

Sloths like these once lived from Alaska to Argentina, and some species had bony structures on their backs, called osteoderms — a bit like the plates of modern armadillos — that may have been ...