Tag: "dinosaurs" at biology news
A test case for DNA barcodes to identify species
...lson calls the "worst wave of extinction since the dinosaurs
died," the need for a fast and easy way to identify species has never been greater. With too few specialists to do the job, biologists are looking for high-throughput tools that can rapidly and accurately identify individuals from known species and f...
Operation Dangling Dino
... The specimen holds a wealth of information about dinosaurs
prior to their extinction. The find is extremely rare since dinosaurs
of this genus are not typically found in this southern region (similar specimens have been located i...
Growing pains: T. Rex was teenage giant
...on has spent much of his career exploring how some dinosaurs
got so big. The first dinosaurs
to roam the Earth some 225 million years ago were about a yard long and weighed between 50 to 100 po...
Ancient life form may help create newest technologies
...n the fossil record as far back as the time of the dinosaurs
and, as a major component of phytoplankton, are an important basis for much ocean life. But they may also be the key to a more efficient, less costly way to produce some of the most advanced high tech materials in the world, scientists say. Progress...
90 million year old dino tracks found on resort island
...roatia. The tracks belong to giant long-necked dinosaurs
called sauropods, and more specifically, the last ...majestic titanosaurs. The tracks of these giant dinosaurs
were made while they walked side byside, along the shore of the ancient Tethys sea that covered what...
Origin of West Indian insect eater much older than previously thought
...mic asteroid strike thought to have killed off the dinosaurs
about 65 million years ago.As the theory goes, an asteroid, about 10 kilometers in diameter, struck somewhere in what is now the Yucatan peninsula, not far from where solenodon lives today. It has not been clear whether solenodons arrived i...
Two dinosaurs from Africa give clues to continents' split
...l in critical gaps in the evolution of carnivorous dinosaurs
on Africa. The species are described in a paper pu...aid. It belongs to a group of southern carnivorous dinosaurs
called abelisaurids. The head of Rugops had a tough covering of scales or surface armor and was rid...
Following complex motions
... role that they had occupied during the age of the dinosaurs
to claim niches that were abandoned as the "thunder lizards" died out. Using a technique called "in vivo optical imaging," a team of researchers from Vanderbilt University performed the first detailed analysis of the MT center of a prosimian, a fami...
UC San Diego bioinformatics experts help reconstruct the genomic makeup of our ancestors
... that lead to often unrealistic reconstructions of dinosaurs
and other prehistoric animals on movie screens and in toy stores, this is the first rigorous reconstruction of the genomic makeup of our mammalian ancestors." Pevzner and Tesler are among the more than 200 co-authors of the Nature article, and expand...
A world ruled by fungi
...in Swedish The catastrophe that extinguished the dinosaurs
and other animal species, 65 million years ago also brought dramatic changes to the vegetation. In a study presented in latest issue of the journal Science , the paleontologists Vivi Vajda from the University of Lund, Sweden and Stephen McLoughlin f...
Pacific leatherback turtle could go extinct in 10 years
...om the tropics to the Arctic since the time of the dinosaurs
more than 100 million years ago. But scientists have documented a precipitous decline of the Pacific leatherback in the past two decades. Since 1982, their numbers have dropped from approximately 115,000 reproductive females to fewer than 3,000 remai...
DFG establishes 14 new research units
...n dust affects the climate. The so-called sauropod dinosaurs
were one of the largest life forms on earth. At th... to pursue the question of why the bodies of these dinosaurs
that have been extinct for more than 65 million years could have assumed such gigantic dimensions an...
A lost world: Two previously unknown dinosaurs discovered in Antarctica
...dia to hear about the discoveries offossils of two dinosaurs
believed to be new to science. Againstincredible odds, researchers working in separate sites, thousandsof miles apart in Antarctica recently found what they believe arethe fossilized remains of an early plant-eating dinosaur and ameat-eater related t...
Dinosaur fossil record compiled, analyzed
...well the relationships that have been proposed for dinosaurs
fits in with the stratigraphic data, which contrib...r of age. Heathcote said that the known number of dinosaurs
now stands at slightly more than 250. But because her results give a maximum possible completeness ...
New evidence says Earths greatest extinction caused by ancient meteorite
Long before the dinosaurs
ever lived, the planet experienced a mass extinction so severe it killed 90 percent of life on Earth, and researchers at the University of Rochester think they've identified the unlikely culprit. "An ancient meteorite body, one from the days when the...
Ultra-low oxygen could have triggered die-offs, spurred bird breathing system
...stem in some dinosaurs, a group called Saurischian dinosaurs
that includes the gigantic brontosaurus. Rather th...still found in today's birds, made the Saurischian dinosaurs
better equipped than mammals to survive the harsh conditions in which oxygen content of air at the E...
Specialized brain helped ancient reptiles fly and hunt
...tly, but they're fairly closely related--birds are dinosaurs
and pterosaurs are close cousins of dinosaurs," Wi...h has shed light on the correct facial features of dinosaurs
from designing a new nose for Diplodocus to removing the lips on Tyrannosaurus rex."If you look clo...
World's largest forest birds may produce world's deepest bird calls
...y of living cassowaries might provide clues to how dinosaurs
communicated." Coincidentally, the great early 20th Century dinosaur hunter, Barnum Brown, described the Corythosaurus, otherwise known as the Corinthian Helmet Lizard as "cassowary-like....
Genetic differences in termite castes may lead to better control
... termites evolved about 100 million years ago when dinosaurs
existed. They came from the same ancestors as wood-dwelling cockroaches. The other researchers involved with this study were research scientist Dancia Wu-Scharf, assistant professor Barry Pittendrigh and professor Gary Bennett, all of the Purdue Depa...
Is this what killed the dinosaurs?
The extinction of the dinosaurs
thought to be caused by an asteroid impact some 6...several million years before the extinction of the dinosaurs
had a similarly devastating impact on the environment. However, at this earlier time there is no evi...
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