There is no question that Tyrannosaurus rex got big. In fact, this fearsome dinosaur may have been Earth's most massive land ...

Dinosaur bones are like trees—every year is represented by a new ring, and paleontologists can count those concentric circles ...

Fossils reveal dinosaurs were flourishing in diverse ecosystems right up until the asteroid impact ended their reign. Their abrupt extinction reshaped Earth’s ecosystems and set the stage for mammals ...

The largest-ever study of how the “king of dinosaurs” grew shows a much longer, slower path to adulthood than scientists ...

A new approach using the hyoid bone uncovered distinct growth patterns. A new study has brought clarity to a long-running debate in dinosaur research by strengthening the case that Nanotyrannus was a ...

Layers of rock can tell the story of life on Earth, but only if you know when each chapter was written. For many dinosaur sites, that date has been little more than a rough guess. Now, a team of ...

A Psittacosaurus interacting with a Repenomamus robustus, an ancient mammal. Illustration: Copyright 2023 Michael W. Skrepnick / courtesy of Canadian Museum of Nature ...

Rachael has a degree in Zoology from the University of Southampton, and specializes in animal behavior, evolution, palaeontology, and the environment. Rachael has a degree in Zoology from the ...

For more than a century, paleontologists have treated dinosaurs and mammals as rival success stories that simply took turns ruling the planet. New work on how each group raised its young suggests the ...