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Tag: "skull" at biology news

UI anthropologist, colleagues discover remains of earliest giant panda

...and his colleagues report the first discovery of a skull from a "pygmy-sized" giant panda -- the earliest-k...ed for millions of years. Ciochon says that the skull --, about one-half the size of a modern-day giant panda skull, but anatomically very similar -- indi...

Reconstructing the biology of extinct species: A new approach

... To make the discovery, the scientists scanned skull samples of each species, measuring the size of each semicircular canal and calculating the radius of curvature. Most of the specimens were scanned at the Center for Quantitative Imaging at Penn State on the OMNI-X high-resolution x-ray CT scanner, w...

Fused nasal bones helped tyrannosaurids dismember prey

..., was keeping the T. rexes from breaking their own skull while breaking the bones of their prey." Snivel...h other carnivorous dinosaurs, says Snively, their skull bones might shear apart slightly when they chomp down on other animals. "With tyrannosaurs, all the ...

Researchers identify gene involved in dog size

...morphology including, for instance, leg length and skull shape. Three high-resolution photos depicting the wide size range among dog breeds are available at: www.genome.gov/pressDisplay.cfm?photoID=20009 ; www.genome.gov/pressDisplay.cfm?photoID=20010 ; and www.genome.gov/pressDisplay.cfm?photoID=20...

Ancient amphibians evolved a bite before migrating to dry land

...tors. The shapes of the junctions between adjacent skull bones -- termed "sutures" -- in the tops of these ...g fish, we found that the shapes of sutures in the skull roof indicate whether a fish captures its prey by sucking it into the mouth -- like a goldfish -- or...

Paleontologists discover new mammal from Mesozoic Era

...of Beijing. The researchers discovered that the skull of Yanoconodon revealed a middle ear structure that is an intermediate step between those of modern mammals and those of near relatives of mammals, also known as mammaliaforms. "This new fossil offers a rare insight in the evolutionary origin of t...

Hofmeyr skull supports the 'Out of Africa' theory

...derstanding the course of human evolution. A human skull discovered over fifty years ago near the town of H... published today in Science magazine has dated the skull to 36,000 years ago. This skull provides critical corroboration of genetic evidence indicating that ...

Ultrasound upgrade produces images that work like 3-D movies

... of certain kinds of birth defects of the face and skull and improve surgeons' depth perception during ultrasound-guided medical procedures, including tumor biopsies and robot-assisted surgeries done through tiny "keyhole" incisions. The Duke team, which also includes Joanna Noble, an undergraduate stud...

Ladybugs may be cute, but watch out when they get near wine

...Craniofacial Biology, shows a 1.9 million-year-old skull belonging to Homo rudolfensis, the earliest member...first scientist to produce a reconstruction of the skull that questions renowned paleontologist and archeologist Richard Leakey"s depiction of modern man"s e...

Man's earliest direct ancestors looked more apelike than previously believed

...Craniofacial Biology, shows a 1.9 million-year-old skull belonging to Homo rudolfensis, the earliest member...first scientist to produce a reconstruction of the skull that questions renowned paleontologist and archeologist Richard Leakey"s depiction of modern man"s e...

New fMRI technology making brain tumor surgery safer

...e also were forced to make a larger opening of the skull and expose more areas.? The need for electrical stimulation also can lengthen a surgical procedure by 30 to 60 minutes. While neurosurgeons make the transition to the fMRI-assisted navigation technology, they are continuing to perform brain stim...

Slow brain waves play key role in coordinating complex activity

...dures, Barbaro removed a portion of each patient's skull and placed a grid of 64 electrodes on the surface of the brain's frontal and temporal lobes to precisely localize the source of the seizure so it could be removed in a subsequent surgical procedure. Knight, Canolty and their UC Berkeley colleagues th...

Researchers give name to ancient mystery creature

...can find more of it. We have no information from a skull or other parts of the body." ...

West Australian fossil find rewrites land mammal evolution

...was found. The fossil skeleton shows the fish's skull had large holes for breathing through the top of the head but importantly also had muscular front fins with a well-formed humerus, ulna and radius the same bones are found in the human arm. "This new fossil proves that features of land-living tetr...

Radiologists attempt to solve mystery of Tut's demise

...st vertebra in the neck. They found no evidence of skull fractures. A mishap during the mummification pr...lies immediately underneath the bone defect in the skull base through which the spinal cord emerges," Dr. Selim said. Dr. Selim's team did not escape the...

Study suggests evolutionary link between diet, brain size in orangutans

...rmal brain size of a controversial 18,000-year-old skull recently found on the Indonesian island of Flores, Taylor and van Schaik said in their article. In announcing the find in 2004, the skull's discoverers suggested that the small-brained specimen represented a new dwarf early human species that someh...

Scientists describe new African monkey genus ?first in 83 years

...h only a week's notice to work with Stanley on the skull of the only specimen of Kipunji. They used the Fi...are Kipunji with other primates and found that the skull and external features of the specimen do not exhibit the diagnostic morphological features of baboon...

Making a face: A new and earlier marker of neural crest development

The fate of cells that go on to form the face, skull and nerve centers of the head and neck in vertebrates is determined much earlier in development than previously thought, and is independent of interaction with other forming tissues, according to a recent study published in the journal Nature. The ...

Septum keeps neurons in synch, can reduce epileptic seizures by 90 percent

...sts and medical providers know that brain lesions, skull fractures, and high fever are among the factors that can produce epilepsy. But in most cases, there is no obvious cause, Colom said. Colom's lifelong interest in how the brain works has led him to study epilepsy and Alzheimer's disease. People who ...

Malignant melanoma cells secrete protein required for embryo formation

...uently able to induce ectopic (abnormal) embryonic skull and backbone (axes) formation. "This finding highlights the convergence of tumorigenic and embryonic signaling pathways. From a translational perspective, Nodal signaling provides a novel target for treatment of aggressive cancers such as melanomas...

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