That’s the literal translation of the term Dinosauria, coined by Sir Richard Owen in the 19th century to describe the colossal bones early paleontologists were unearthing. For a long time, the name ...

Among the strangest branches of the dinosaur family tree are the alvarezsauroids, small, bird‑like theropods that lived from the Jurassic into the Cretaceous. They don’t fit the image of sharp‑toothed ...

Sixty-six million years ago, a massive asteroid smashed into Earth. Life has undergone at least five mass extinctions in the ...

For years, we suspected that Alvarezsaurids underwent a rare process of evolutionary miniaturization directly coupled to a ...

Scientists wanted to know why the iconic triceratops had such an unusually large nose compared to most species on Earthj.

Three tiny Purgatorius teeth found in Colorado are helping scientists trace how early primates evolved and spread across North America.

Researchers discovered that a 215-million-year-old reptile started life on four legs and switched to two as an adult.

Do the bones of all Nile crocodiles have the same number of growth marks as their age? And can such growth rings be counted ...

When the asteroid ended the age of non-avian dinosaurs, it cleared ecological space on a global scale. Small survivors ...

A few teeth, smaller than a grain of rice, are changing the map of your earliest primate relatives. They come from a creature called Purgatorius, a tiny tree-dwelling mammal that lived about 66 ...

A "peculiar" ancient relative of the crocodile which experts believe began life on four legs before, in adulthood, it learned ...

Learn how fossils from Arizona’s Petrified Forest National Park revealed that a Late Triassic crocodile relative may have started life on four legs before walking on two as an adult.