Tag: "dinosaurs" at biology news
Rise of dinosaurs in Late Triassic more gradual than once thought
...f northern New Mexico show for the first time that dinosaurs
and their non-dinosaur ancestors lived side by sid...s of millions of years, disproving the notion that dinosaurs
rapidly replaced their supposedly outmoded predecessors. The fossils were excavated from the Hayde...
Science earns top honor from Spain's Crown Prince
...vidence that an extraterrestrial impact killed the dinosaurs
are among the historic advances that debuted on the journal's pages. Today, Science is a global weekly, with offices in Washington, D.C., and Cambridge, U.K., and news reporters located worldwide, from Germany to Japan. Science has the largest ...
Book makes case for using evolution in everyday life
Evolution is not just about human origins, dinosaurs
and fossils, says Binghamton University evolutionist David Sloan Wilson. It can also be applied to almost every aspect of human life, as he demonstrates in his first book for a general audience, Evolution for Everyone: How Darwin's Theory Can Change...
Agonized death throes probable cause of open-mouthed, head-back pose of many dino fossils
...a feathered dinosaur and the proposed link between dinosaurs
and present-day birds. "Virtually all articulate...ation usually given by paleontologists is that the dinosaurs
died in water and the currents drifted the bones into that position, or that rigor mortis or drying ...
Fused nasal bones helped tyrannosaurids dismember prey
...gica Polonica. Tyrannosaurids differ from other dinosaurs
in the great robustness of their teeth and skulls,...is extensive fusion increased the strength of such dinosaurs
as the T. rex and helped them apply powerful bites that could splinter bone. With other carnivorous ...
Dinosaur hearing, listening to muscle noise, quieter cubicles
How did the hearing of dinosaurs
compare to that of present-day animal species" Wh...t the hearing abilities of extinct animals such as dinosaurs
and early mammals. According to the University of Maryland's Robert Dooling ( firstname.lastname@example.org ...
Amphibians in losing race with environmental change
...f millions of years - since before the time of the dinosaurs
and through many climatic regimes - the massive, worldwide decline of amphibians can best be understood by their inability to keep pace with the current rate of global change, a new study suggests. The basic constraints of evolution and the inabil...
How to look at dinosaur tracks
...tudied a range of larger tracks from the family of dinosaurs
that includes the T. Rex and the tridactyl, and provide a guide for interpreting the effects of many different types of erosion on these invaluable impressions. Well-preserved vertebrate tracks in the rock record can be an invaluable source of info...
Protein fragments sequenced in 68 million-year-old Tyrannosaurus rex
...nt and still controversial proposal that birds and dinosaurs
are evolutionarily related. The HMS and BIDMC researchers, working with scientists at North Carolina State University, report their findings in the April 13 Science. "Most people believe that birds evolved from dinosaurs, but thats all based on the...
Ancient T. rex and mastodon protein fragments discovered, sequenced
...ickens, lending support to the idea that birds and dinosaurs
are evolutionarily related. "Most people believe that birds evolved from dinosaurs, but that's based on the 'architecture' of the bones," Asara said. "This finding allows us the ability to say that they really are related because their sequences ar...
The delayed rise of present-day mammals
It took 10 to 15 million years after the dinosaurs
were wiped out before modern mammals - including o...ches left behind following the mass extinctions of dinosaurs
and many other large animals when a huge asteroid crashed into the Earth about 65 million years ago....
Dinosaur extinction didn't cause the rise of present-day mammals, claim researchers
...the Mass Extinction Event (MEE) that wiped out the dinosaurs
65 million years ago prompted the rapid rise of th...rs. However, throughout the Cretaceous epoch, when dinosaurs
walked the earth, these mammal species were relatively few in number, and were prevented from divers...
No need to thank dinosaur-killing asteroid for mammalian success
...al history tale that every third grader knows: The dinosaurs
ruled the Earth for hundreds of millions of years,...the prominent hypothesis that a mass extinction of dinosaurs
65 million years ago played a major role in the diversification of todays mammals. An internationa...
Despite their heft, many dinosaurs had surprisingly tiny genomes
CAMBRIDGE, Mass. -- They might be giants, but many dinosaurs
apparently had genomes no larger than that of a mo...to gauge the genome sizes of 31 species of extinct dinosaurs
and birds, whose bone cells can be measured from the fossil record. The researchers, at Harvard Un...
Paleontologists discover most primitive primate skeleton
...rs ago in the period between the extinction of the dinosaurs
and the first appearance of a number of undisputed members of the modern orders of mammals. "Plesiadapiforms have long been one of the most controversial groups in mammalian phylogeny," said Michael J. Novacek, curator of paleontology at the Americ...
Giant Sauropod dinosaur found in Spain
...Teruel Spain, reveal that Europe was home to giant dinosaurs
in the Late Jurassic period -- about 150 million years ago. Giant dinosaurs
have previously been found mainly in the New World and Africa. This dinosaur may have been the mos...
Dinosaurs -- stones did not help with digestion
The giant dinosaurs
had a problem. Many of them had narrow, pointed te...up, crush and thereby also to digest food. Giant dinosaurs
from the Jurassic and Cretaceous period (200 million to 65 million years ago) such as Seismosaurus a...
Shoulder ligament a linchpin in the evolution of flight
...et some 250 million years ago and evolved into the dinosaurs
that dominated during the Mesozoic Era. So to understand the sweep of evolution, the alligator was a great starting place. In the laboratory of Farish Jenkins Jr., a professor of biology and curator of vertebrate paleontology at Harvard University, ...
Dramatic shift from simple to complex marine ecosystems occurred 250M years ago at mass extinction
... animal diversity. The asteroid that wiped out the dinosaurs
couldn't manage that." Lidgard added, "When Pete walked into my office with his preliminary results, I simply couldn't believe them. Paleontologists had long recognized that ecosystems had become more complex, from the origin of single-celled bacter...
Novel experiment documents evolution of genome in near-real time
...ook at the fossil record to study how evolution of dinosaurs
and other animals occurred over millions of years, but in the case of the E. coli bacterium, new technology has given us the ability to observe evolution as it is occurring over a matter of days," said Bernhard . Palsson, the senior author of the stu...
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