Newly identified dinosaur had teeth that were constantly replaced. ... Life reconstruction of Iberospinus natarioi, showing detail of muscles, and a fossil of part of the lower jaw.

Paleontologists know the bone bed as PFV 393. The late fossil preparator Bill Amaral found the site in 2011 on a field trip ...

Dinosaurs; Super Croc with T. Rex Teeth May Have Chowed Down on Dinosaurs. ... an almost-complete portion of the right upper jaw, a piece of the left lower jaw, ... Because of this missing record, ...

Paleontologists have long been perplexed by dinosaur fossils with missing pieces -- sets of teeth without a jaw bone, bones that are pitted and grooved, even bones that are half gone. Now a ...

This is the 100 million-year-old skull of the tiniest-known dinosaur. "When I first saw this specimen, it really blew my mind ...

Close-up views of the areas of interaction, from left: the mammal's paw grasping the dinosaur's jaw; the mammal sinking its teeth between the dinosaur's ribs; and the mammal's hind leg trapped ...

When it pressed its jaw closed and blocked its throat, water would get pushed out the sides through teeth and all the little shrimp and water fleas would get trapped on the pterosaur’s hooked teeth.

The bones, which include teeth, vertebrae, skull bones, jaw fragments, limb bones and ribs, date back to around 72 million years ago, during the late Cretaceous period (145 million to 66 million ...