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Tag: "fossilized" at biology news

CT scan reveals ancient long-necked gliding reptile

...ros. Curved foot and ribs are clearly visible The fossilized bones of a previously unknown, 220 million-year-ol... not want to cut up the sheet of rock in which the fossilized glider was embedded, they gave up total resolution of all of the bones. Because this fossil has b...

Ice Age extinction claimed highly carnivorous Alaskan wolves

...tological study of the morphology, or form, of the fossilized skeletal remains. This multifaceted approach allowed the researchers to trace the ancient wolves’ genetic relationships with modern-day wolves, as well as understand their role in the ancient ecosystem. “Being able to say all of those things—havi...

Protein fragments sequenced in 68 million-year-old Tyrannosaurus rex

... they had found evidence of soft tissue inside the fossilized femur, a discovery widely covered. After seeing one such story in the New York Times, Cantley contacted Asara who, in 2002, had sequenced collagen fragments from 100,000- to 300,000-year-old mammoth bone samples sent by Schweitzer and colleagues. Mor...

A buffet for early human relatives

...remove tiny samples from four 1.8-million-year-old fossilized Paranthropus teeth, then tested the samples to det...e and analyze tooth enamel samples from the large, fossilized teeth of prehistoric horses, rhinos and elephants to determine the animals' diets. Until now, la...

Coral stress 'like never in history'

... Reef Studies and The University of Queensland, of fossilized reefs in Papua New Guinea show how often the reefs were ‘wiped out?by disastrous events in past times. "What we found was in stark contrast to what we see in the modern day," says Ass. Prof. Pandolfi. "The frequency of reef [die-off] events in the...

'Nymph of the sea' reveals remarkable brood

...shells up to 500 million years old; however, their fossilized soft-parts are exceedingly rare. "Supposed examples of fossil invertebrate eggs are also few. The fossil we have found contains soft-part anatomy such as legs and eyes and also includes about twenty eggs, each about half a millimetre in size, and ...

Duck-billed dino crests not linked to sense of smell

...rs' brain cavity using well-preserved fragments of fossilized bone and created the first-ever cast of the lambeosaur brain, which is approximately the size of a human fist. The findings add weight to two currently popular theories: that the crests were used to create resonant sounds to attract mates or warn of ...

Embryos tell story of Earth's earliest animals

...als will have to be gleaned from spherical embryos fossilized under very specific conditions, according to a new...a tenth of a millimeter) were just as likely to be fossilized as those of larger cousins (about half a millimeter). "This is good news," Raff said. "Embryo size...

Did feathered dinosaurs exist?

...inosaur integument." Based on their examination of fossilized remains of dinosaurs with no relationship to birds, they suggest that decomposition of skin can lead to patterns resembling feathers. Birds have been thought to be related to theropod dinosaurs because both groups have a hand reduced to three digit...

New technology shows our ancestors ate…everything!

... and more objective way to examine the surfaces of fossilized teeth, a practice used to figure out the diets of ...led "scale-sensitive fractal analysis," to analyze fossilized tooth surfaces through a confocal microscope, which allows three-dimensional analysis of an object. ...

Skull study sheds light on dinosaur diversity

...duate student, when he and another student studied fossilized sauropod tracks and titanosaur limb anatomy. From those studies, Wilson concluded that unlike other sauropods, titanosaurs walked with their feet planted far from the middles of their bodies, an unusual style of "wide gauge" locomotion. "Most anima...

Agilent Technologies introduces high-capacity human protein removal system for proteomics research

The fossilized skeleton of a small crocodile relative excavated last year at Petrified Forest National Park in Arizona throws a wrench into theories of how and where the dinosaurs arose more than 210 million years ago at the end of the Triassic Period. The animal,...

Revueltosaurus skeleton unearthed at Petrified Forest upsets dinosaur tale

The fossilized skeleton of a small crocodile relative excavated last year at Petrified Forest National Park in Arizona throws a wrench into theories of how and where the dinosaurs arose more than 210 million years ago at the end of the Triassic Period. The animal,...

Ancient DNA helps clarify the origins of two extinct New World horse species

... examined mitochondrial DNA (mtDNA) extracted from fossilized horse bones. Mitochondria, which have their own genome, contain a stretch of sequence that's useful for inferring evolutionary relationships: though the region undergoes high mutation rates, the patterns of mutations remain stable over thousands of g...

NC State scientist finds soft tissue in T. rex bones

...re much easier to work with in a lab. In contrast, fossilized bone is believed to be completely mineralized, mea...ttempting to dissolve the minerals from a piece of fossilized bone, so the theory goes, would merely dissolve the entire fossil. But the team was surprised by wh...

Dinosaur DNA? New Patent Covers Degraded DNA recovery

...or the recovery of live ancient bacteria and fungi fossilized in amber. By reconstituting nucleic acid molecules that have been degraded but still contain useful information scientists at MatrixDesign are able to create a template from which to multiply the genetic material. That process is repeated until the ...

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