Quick Take Reaching 30 feet and 3 tons was the mandatory size for this apex marine predator. The 5-foot skull of Machimosaurus rex created significant predatory constraints for the species. Recent ...

Some 215 million years ago in what is now northwestern Argentina, the terrestrial crocodylomorph Hemiprotosuchus leali prepares to devour the early mammal relative Chaliminia musteloides. “Lots of ...

SAO PAULO, Brazil — The 80 million-year-old remains of a land-bound reptile described as a possible link between prehistoric and modern-day crocodiles were displayed to the public for the first time ...

A miniature model in front of the larger skeletal version of the Pachyrhinosaurus perotorum, a dinosaur named partially after Ross Perot and his family, in the T. Boone Pickens Life Then And Now Hall.

Paleontologists have been on the trail of Deinosuchus since a pair of fossilized teeth were found in North Carolina in 1858. Since that time the reptile’s fossilized teeth, bony armor, skull pieces, ...

Breakthroughs, discoveries, and DIY tips sent six days a week. Terms of Service and Privacy Policy. Staring at a crocodile or alligator can feel like looking back in ...