15+ hour, 46+ min ago Two dinosaur eggs, each about five inches (13 centimeters) across and almost perfectly round, have surprised scientists in eastern China. Instead of fragile shells packed with embryonic bone, the fossil eggs were hollow cavities stuffed with glittering mineral crystals. The work…...

1+ day, 20+ hour ago Near the end of the dinosaurs" reign, about 18,000 footprints and tracks were pressed and stamped into wet mud along a shoreline in central Bolivia. Those tracks now form a single exposed rock surface in Torotoro National Park, revealing a type…...

1+ day, 21+ hour ago Understanding how birds learned to fly has fascinated scientists for decades. Feathers, wings, and flight are often seen as a straight line of progress from dinosaurs to modern birds. But new research suggests the story was not that simple. Some…...

2+ day, 18+ hour ago About 68-million-years ago, during the Late Cretaceous, a giant fossil egg was laid in Antarctica. The excavated remains reveal that a huge marine reptile laid eggs instead of giving birth to live offspring, as scientists originally assumed. Nicknamed "The Thing,…...

3+ day, 13+ hour ago A massive predator's tooth turned up in North Dakota, a place better known for dinosaurs than sea monsters. The discovery raised eyebrows right away. Mosasaur fossils usually come from ocean sediments. These reptiles were built for life at sea, patrolling…...

6+ day, 14+ hour ago In the desert of Qatar, scientists uncovered a fossil graveyard showing sea cows have shaped Arabian Gulf seagrass for over 20 million years. Salwasiren qatarensis, a newly described sea cow lived near the Bay of Salwa, which is now a dugong…...

1+ week, 3+ day ago Seventy million years ago, a crocodile relative almost as long as a compact car stalked dinosaurs in southern Argentina. Now, scientists have uncovered its fossilized bones, showing that this meat-eater was one of the top predators in its ancient ecosystem....

1+ week, 4+ day ago In ancient ecosystems, small birds darted and called above fern canopies and along lake margins. Their fossils now rest encased in stone, awaiting study with modern analytical methods. A recent discovery in northeastern Asia now offers a rare window into…...

1+ week, 5+ day ago For nearly 40 years, paleontologists have argued over a single skull: was Nanotyrannus a bona fide species, or just a teenage Tyrannosaurus rex with growth left to do? A new paper in the journal Science delivers the clearest verdict yet. By…...

1+ week, 5+ day ago A new dome-headed dinosaur species discovered in northern Montana is giving scientists a fresh look at a very strange group of plant eaters. Brontotholus harmoni lived about 75 million years ago, when shallow seas and swampy floodplains covered much of western…...