Scientists say comet killed off mammoths, saber-toothed tigers
First an explosion as powerful as thousands of megatons of TNT rained meteorites down on North America. Then forest fires broke out across the continent, sending up a thick layer of soot and dust that...
View ArticleTrove of sea turtle and other marine fossils found along ancient new jersey...
Paleontologists have discovered numerous marine sea life fossils at a dig site in Sewell, N.J., including sea turtles, crocodiles, other reptiles, and fish.
View ArticleArcheologists find what might be the smallest Mesozoic dinosaur
(PhysOrg.com) -- Paleontologists digging in the south of England have unearthed what might be the smallest dinosaur ever discovered; at just a foot long and weighing only a couple hundred grams, the...
View ArticlePrimitive birds shared dinosaurs' fate
A new study puts an end to the longstanding debate about how archaic birds went extinct, suggesting they were virtually wiped out by the same meteorite impact that put an end to dinosaurs 65 million...
View ArticleOrigin of dinosaur-killing asteroid remains a mystery
(PhysOrg.com) -- Observations from NASA's Wide-field Infrared Survey Explorer (WISE) mission indicate the family of asteroids some believed was responsible for the demise of the dinosaurs is not likely...
View ArticleImpact study: Princeton model shows fallout of a giant meteorite strike
(PhysOrg.com) -- Seeking to better understand the level of death and destruction that would result from a large meteorite striking the Earth, Princeton University researchers have developed a new model...
View ArticleMassive volcanoes, meteorite impacts delivered one-two death punch to...
(PhysOrg.com) -- A cosmic one-two punch of colossal volcanic eruptions and meteorite strikes likely caused the mass-extinction event at the end of the Cretaceous period that is famous for killing the...
View ArticleOver 65 million years North American mammal evolution has tracked with...
Climate changes profoundly influenced the rise and fall of six distinct, successive waves of mammal species diversity in North America over the last 65 million years, shows a novel statistical analysis...
View ArticleNot by asteroid alone: Rethinking the Cretaceous mass extinction
(PhysOrg.com) -- At the end of the Cretaceous period some 65 million years ago, an asteroid slammed into Mexicos Yucatan Peninsula, causing severe but selective extinction. While that is widely...
View ArticleDinosaurs had fleas too -- giant ones, fossils show
In the Jurassic era, even the flea was a beast, compared to its minuscule modern descendants. These pesky bloodsuckers were nearly an inch long.
View ArticleHot-spring fossils preserve complete Jurassic ecosystem
Scientists are uncovering a beautifully-preserved ecosystem from around a Jurassic hot spring, helping fill a gap in the fossil record of more than 300 million years.
View ArticleWhen dinosaurs roamed a fiery landscape
The dinosaurs of the Cretaceous may have faced an unexpected hazard: fire! In a paper published online today, researchers from Royal Holloway University of London and The Field Museum of Natural...
View ArticleNautilus survives 500 million years -- until humans fancy it
No matter how well adapted an animal may be, it can spell evolutionary doom to have feathers or even shells that become coveted by human beings. Take the nautilus, a creature that pulled easily through...
View ArticleMountains, seaway triggered North American dinosaur surge
The rise of the Rocky Mountains and the appearance of a major seaway that divided North America may have boosted the evolution of new dinosaur species, according to a new Ohio University-led study.
View ArticleSeeking the deadly roots of the dinosaurs' ascent
Over the past 450 million years, life on earth has undergone at least five great extinctions, when biological activity nosedived and dominant groups of creatures disappeared. The final one (so far) was...
View ArticleFossil skeleton of strange, ancient digging mammal clears up 30-year...
Shortly after dinosaurs like Tyrannosaurus and Triceratops went extinct 65 million years ago, Earth's ancient landscapes were filled with unusual mammals only distantly related to those alive today....
View ArticleDinosaur die-out might have been second of two closely timed extinctions
The most-studied mass extinction in Earth history happened 65 million years ago and is widely thought to have wiped out the dinosaurs. New University of Washington research indicates that a separate...
View ArticleThe sad state of biodiversity
Factfile on biodiversity ahead of talks opening Monday under the UN's Convention on Biological Diversity (CBD) in Hyderabad, India.
View ArticleResearchers work across fields to uncover information about hadrosaur teeth
(Phys.org)—An unusual collaboration between researchers in two disparate fields resulted in a new discovery about the teeth of 65-million-year-old dinosaurs.
View ArticlePear genome provides new insight into breeding improvement and evolutionary...
An international research team led by Nanjing Agricultural University and BGI, has completed the first genomic sequence of pear by an approach using the combination of BAC-by-BAC strategy and next-gen...
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