Paleontologists have identified certain dinosaurs as highly intelligent based on brain size and observed behaviors. These ...

(Credit: James Havens) Duck-billed dinosaurs, also called Hadrosaurs, were common during the Cretaceous period in Europe, North America, and Asia. Often called the “cows of the Cretaceous,” they were ...

In a large strip that spans central Texas, some of these so-called Early Cretaceous fossils can be seen exposed on the ...

You might know the Cretaceous Period for big animals such as Tyrannosaurus rex and Triceratops, or for being the end of the age of dinosaurs. But what was the world like in the millions of years ...

Scientists have discovered levels of iridium 30 times greater than average in the Cretaceous/Tertiary (KT) boundary, the layer of sedimentary rock laid down at the time of the dinosaur extinction.