Jul 17, 2015

Oldest lizard embryos discovered in fossil eggs

Tiny fossil eggs long thought to harbor the embryos of dinosaurs or primitive birds in fact contained unhatched baby lizards — the oldest ever found, scientists said Wednesday. The eggs, roughly the size of a sparrow egg, are about 125 million years old, and ...

Genome study reveals how the woolly mammoth thrived in the cold

Jul 3, 2015

Genome study reveals how the woolly mammoth thrived in the cold

Woolly mammoths spent their lives enduring extreme Arctic conditions including frigid temperatures, an arid environment and the relentless cycle of dark winters and bright summers. An exhaustive genetic analysis of these bygone Ice Age giants and their living cousins, Asian and African elephants, has ...

Jun 18, 2015

Dinosaurs avoided tropics due to hot, dry climate: study

An unpredictable, yet scorching and dry climate kept large, grass-eating dinosaurs out of the tropics for some 30 million years after they first appeared on Earth, a study out Monday found. It has been a long-standing mystery: Why did long-necked dinosaurs seem to avoid ...

Dinosaur bones yield likely blood, collagen

Jun 10, 2015

Dinosaur bones yield likely blood, collagen

Scientists said Tuesday they have discovered what appear to be red blood cells and collagen fibers in dinosaur bones, a find that may boost prospects of prizing organic remains from a much wider range of fossils. Using molecular microscopy, a British team analyzed eight ...

'Hellboy' dinosaur unearthed in Canada

Jun 7, 2015

'Hellboy' dinosaur unearthed in Canada

A new horned dinosaur that was a relative of Triceratops has been unearthed in Canada, researchers say. The bones were found sticking out of a cliff along the Oldman River in southeastern Alberta about a decade ago. “However, it was not until the specimen ...

Expert judges that dinosaurs were warm-blooded

May 29, 2015

Expert judges that dinosaurs were warm-blooded

Dinosaurs were warm-blooded, according to a scientist who judged their metabolism using body mass and growth rates deduced from fossils of species including Tyrannosaurus rex. Paleontologist Michael D’Emic of Stony Brook University in New York took issue with the conclusion of other researchers last ...

Dog domestication much older than previously known

May 22, 2015

Dog domestication much older than previously known

Genetic information from a 35,000-year-old wolf bone found below a frozen cliff in Siberia is shedding new light on humankind’s long relationship with dogs, showing canine domestication may have occurred earlier than previously thought. Today’s dogs, from the Chihuahua to the Great Dane, are ...