These unusual birds, only one species of which exists in South America today, originated in the Old World.
The discovery of well-preserved pelves and a partial pelvic fin from Tiktaalikroseae
Sauropods, the largest land animals in Earth's history, are still mightily puzzling the scientists.
Colour scheme of an extinct marine animal using fossilised skin pigment.
52 million years ago the giant coniferous evergreen tree known to botanists as Agathis thrived
Dinosaur fossils are exceptionally rare in the Arabian Peninsula.
Dinosaurs, provides unique insights into the role of mass extinction.
A 100-million-year old piece of amber has been discovered
Fossils discovered in Tunisia challenge several hypotheses.
Fossils can tell us lots about animals
Discovery of a new species of fossil horse
A rare, mummified specimen of the duck-billed dinosaur
About 65 million years ago, an asteroid or comet crashed into the Yucatán
Wasps, bees, ants and relatives comprise the megadiverse insect order Hymenoptera
Keratin-covered beaks had already evolved in groups of dinosaurs
Iron may play a role in preserving ancient tissues
A new species of carnivorous dinosaur
A chance find by a high school student led to the youngest, smallest and most complete fossil skeleton yet known from the...
UA Regents' Professor Nicholas Strausfeld and an international team of researchers have discovered the earliest known complete nervous system exquisitely preserved in...
Scientists thought an ice sheet formed more than 90 million years ago when the climate was warmer than it is today. Now,...
Birds originated from a group of small, meat-eating theropod dinosaurs called maniraptorans sometime around 150 million years ago. Recent findings from around...
An international team of researchers, including a University of Virginia professor, has found that two ink sacs from 160-million-year-old giant cephalopod fossils...