By Will Dunham May 28 (Reuters) - Tyrannosaurus rex was a huge land predator during the twilight of the age of dinosaurs. But ...

WASHINGTON, July 8 (Reuters) - Scientists have unearthed in Arizona fossils from an assemblage of animals, including North America's oldest-known flying reptile, that reveal a time of transition when ...

Researchers are uncovering the evolutionary steps that set the stage for dinosaurs to rule the planet Amy McDermott, PNAS Front Matter Paleontologists have found early examples of theropods, the group ...

Do the bones of all Nile crocodiles have the same number of growth marks as their age? And can such growth rings be counted to accurately gauge the age of these reptiles? Is this also an accurate ...

Crocodile bones shed light on growth dynamics. Anusuya Chinsamy-Turan In biology and palaeontology (the study of extinct organisms) there are a few ways to estimate the age of an animal’s skeleton.

Earliest oceanic tetrapod ecosystem from 249 million years ago. A pod of the small-bodied ichthyopterygian ('fish-lizard') Grippia longirostris hunting squid-like ammonoids (top left). The marine ...

The creatures cruised the world’s oceans with features we often associate with marine mammals, such as coats of blubber and the ability to birth live young Riley Black | Science Correspondent Fossils ...