A new dinosaur species from more than 100 million years ago has been discovered and it's notable not for its size but its unusual intelligence.

Komodo dragons have iron-coated, serrated teeth that help them to rip ... teeth razor-sharp and may provide clues about how dinosaurs like Tyrannosaurus rex killed and ate their prey.

Theropod teeth are complex and vary in size, shape, and the anatomy of their serrated edges ... been around a third of the size of their famous cousin Tyrannosaurus rex and likely hunted small ...

Deinonychus was a medium-sized theropod dinosaur, measuring about 3 meters ... Its skull had dozens of sharp, serrated teeth, ideal for slicing through flesh. Fossils such as “Big Al” have ...

They lived about 30 million years apart and never set foot on the same continent. Yet Giganotosaurus carolinii is always getting compared to the world's most popular dinosaur, the beloved and ...

A "serrated blade" found sticking from a rock in the United Kingdom has been identified as a "nearly perfect" prehistoric ...

A "serrated ... shaped teeth of tiger sharks. The species met its demise during the Cretaceous-Tertiary extinction event (known as the KT extinction) that also wiped out the dinosaurs, experts ...

The phenomenon calls to mind the critters that continuously regrow their chompers — for example, sandbar sharks, which sprout tens of thousands of serrated teeth ... as did dinosaurs and birds ...