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Skeleton in Biological News

Fossil evidence of missing link in the origin of seals, sea lions, walruses found in Canadian Arctic

... the United States and Canada have found a fossil skeleton of a newly discovered carnivorous animal, ... sea lions, and the walrus. The analysis of the skeleton and support for the hypotheses that pinniped ... water was weak. "The remarkably preserved skeleton of Puijila had heavy limbs, indicative of well ...

Research links evolution of fins and limbs with that of gills

... that controls the development of part of the gill skeleton in sharks, according to research to be published ... Island Biological Laboratory. "In fact, the skeleton of any appendage off the body of an animal is ... also showed for the first time that the gill arch skeleton of embryonic skates (a living relative of sharks ...

Famous fossil Lucy scanned at the University of Texas at Austin

... skeleton, making her the oldest and most complete skeleton of any adult, erect-walking human fossil. "By ... of Lucy's bones, we can study how her skeleton supported her movement and posture, and compare ... the data and generating images to analyze Lucy's skeleton and begin to answer important questions ranging ...

Details of evolutionary transition from fish to land animals revealed

... the first detailed look at the internal head skeleton of Tiktaalik roseae , the 375-million-year-old ... paper, said the examination of the internal head skeleton further demonstrates the intermediacy of ... among the different parts of the head skeleton also were changing. "Fish in deep water move ...

Of mice and men: similarities between skeletons of both

... Prof. Bab, earlier anatomical works on the mouse skeleton were based on visual observations only and are ... showing all external portions of the mouse skeleton and also the internal anatomy of the bones. ... at various ages, describes the development of the skeleton and its aging and also the differences between ...

Ancient whale fall from California's Ao Nuevo Island one of youngest, most complete known

... Berkeley -- A fossilized whale skeleton excavated 20 years ago amid the stench and noise ... until the lab donated the partially articulated skeleton to the Museum of Paleontology in 2005. As ... of the whale host. In contrast, the Ao Nuevo skeleton was unusually complete and hosted multiple ...

Ancient whale fall from California's Año Nuevo Island one of youngest, most complete known

... Berkeley -- A fossilized whale skeleton excavated 20 years ago amid the stench and noise ... until the lab donated the partially articulated skeleton to the Museum of Paleontology in 2005. As ... of the whale host. In contrast, the Ao Nuevo skeleton was unusually complete and hosted multiple ...

Fish on the menu of our ancestors

... a bone from one of the earliest modern humans in Asia, the 40,000 year old skeleton from Tianyuan Cave in the Zhoukoudian region of China (near Beijing), by ... the diet of one of the earliest modern humans in Asia, the 40,000 year old skeleton from Tianyuan Cave near Beijing, has shown that at least this individual ...

Robo-bats with metal muscles may be next generation of remote control flyers

... of bats' skeletal and muscular systems before developing a "robo-bat" skeleton using rapid prototyping technologies. The fully assembled skeleton rests easily in the palm of your hand and, at less than 6 grams, feels as ...

Studies shed light on collapse of coral reefs

... they also secrete calcium carbonate that becomes the basis for an external skeleton on which they sit. These calcified deposits can grow to enormous sizes ... is the identical gene in corals that helps it develop its external skeleton conserved in the different species over hundreds of millions of years ...

When intestinal bacteria go surfing

... mucosal cells and alter them internally: a part of the cellular supportive skeleton - the actin skeleton - is rearranged in such a manner that the cell surface beneath the ...

World's top minds to celebrate 'the birth and life of beginnings'

... Don Johanson, a co-discoverer of "Lucy," the 3.2-million-year-old skeleton that is recognized as the most famous human predecessor ever found. ... best known for his co-discovery in 1974 of "Lucy," a 3.2-million-year-old skeleton that has prompted major revisions in our understanding of humanity's ...

Early whales gave birth on land

... a female whale with a fetus." It is the first discovery of a fetal skeleton of an extinct whale in the group known as Archaeoceti, and the find ... features with the female of the species, but its virtually complete skeleton is 12 percent larger overall, and its canine teeth 20 percent larger. ...

Early whales gave birth on land, fossil find reveals

... whale with a fetus." In fact, it is the first discovery of a fetal skeleton of an extinct whale in the group known as Archaeoceti, and the find ... features with the female of the species, but its virtually complete skeleton is 12 percent larger overall, and its canine teeth or fangs 20 percent ...

Ancient DNA: reconstruction of the biological history of Aldaieta necropolis

... population and answered questions about history, using DNA extracted from skeleton remains. Knowing the history of past populations and answering ... funerary artefacts than women. It is clear that the genetic analysis of skeleton remains, despite the labour-intensive work involved and the problem of ...

Playing dead is no game for ant survival

... for the death feigning behavior of the young fire ants. The external skeleton of days-old workers is relatively soft. Not only are these young workers ... and stingers are not sufficiently hardened to penetrate the external skeleton of their aggressors. It may be that young workers pretend to be dead to ...

AGU Journal Highlights -- March 19, 2008

... they found that the ratio of phosphorus to calcium within the coral skeleton tracks the ratio of strontium to calcium. Because high ... indicate cooler ocean temperatures, the authors are able to link the coral skeleton phosphorus content to documented seasonal upwelling of cold nutrient-rich ...

New dinosaur from Mexico offers insights into ancient life on West America

... which dates to around 71.5 million to 72.5 million years ago. The skeleton was discovered in the early 1990s on the outskirts of a small town called Rincon Colorado, about 27 miles west of the city of Saltillo. The skeleton was found by Martha Carolina Aguillon, and excavated over the course of ...

New dinosaur species found in Montana

... A dinosaur skeleton found 24 years ago in Montana has finally been identified as a new ... researcher with Horner. Horner said he found the nearly-complete skeleton in 1983 near Choteau, in northwest Montana, but it was located in ...

Research shows skeleton to be endocrine organ

... novel function of the skeleton. Theyve shown for the first time that the skeleton is an endocrine organ that helps control our sugar metabolism and weight ... known before completely changes our understanding of the function of the skeleton and uncovers a crucial aspect of energy metabolism, said Gerard Karsenty, ...

First direct evidence of substantial fish consumption by early modern humans in China

... consumption was an occasional treat or a regular food item. Analysis of a bone from one of the earliest modern human in Asia, the 40,000-year-old skeleton from Tianyuan Cave near Beijing, has shown that at least this individual was a regular fish consumer. This analysis provides the first direct ...

Fossil bone bed helps reconstruct life along California's ancient coastline

... more extensive, and the top of the bone bed has complete, articulated skeletons of seals and other marine mammals." One 12-foot-long fossil seal skeleton that Lipps helped excavate during the 50 years he has visited the bone bed was mounted and displayed for decades at the Natural History Museum of Los ...

Elevated water temperature and acidity boost growth of key sea star species: UBC researchers

... of sea star. The study is one of the first to look at the impact of ocean acidification on marine invertebrates that don't have a large calcified skeleton or external shell, and challenges current assumptions about the potential impact of climate change on marine species. The findings were published ...

Google Earth aids discovery of early African mammal fossils

... yard in Italy where blocks of stone from around the world are sliced up for countertops, masons had noticed what looked like cross-sections of a skeleton in slabs cut from a huge hunk of limestone imported from Egypt. Paleontologist Giovanni Bianucci of the University of Pisa recognized these as ...

Poor treatment for common vertebral compression fractures

... l investigating and treating these patients", says Tommy Hansson. OSTEOPOROSIS IN BRIEF Osteoporosis causes a reduction in the strength of the skeleton making it much easier for a person with osteoporosis to suffer from fractures. The most common fractures occur in the vertebrae, hip and wrist. ...

Study unravels why certain fishes went extinct 65 million years ago

... by complete, articulated individuals. This is unlike the fossil record of most other vertebrates, where bones, teeth and other parts of the skeleton are often scattered and found in isolation. This study is the first to test this theory with hard data and to quantify the relationship between ...

UF scientist tapped by Howard Hughes Medical Institute to pursue 'best ideas'

... on human problems such as birth defects. "I realized that if I wanted to understand how animal form changes during evolution, such as how the skeleton evolved or how snakes lost their legs, I had to understand development, because that's when the genetic blueprint for the body is being executed," ...

Young dinosaurs roamed together, died together

... first skeletons, naming the dinosaur Sinornithomimus ("Chinese bird mimic"). Sereno and associates then opened an expansive quarry, following one skeleton after another deep into the base of the hill. In sum, more than 25 individuals were excavated from the site. They range in age from one to seven ...

'Fattysaurus' or 'thinnysaurus'? How dinosaurs measure up with laser imaging

... Karl said: "Our technique allows people to see and decide for themselves how fat or thin the dinosaurs might have been in life. You can see the skeleton with a belly. Anyone from a five-year-old to a Professor can see it and say, 'I think this reconstruction is too fat or too thin'. He added: "This ...

From seed to nuts: human ancestor's face evolved to eat survival foods

... findings, published in the journal Proceedings of the National Academy of Science, challenge a long-standing hypothesis that the distinctive facial skeleton of Australopithecus africanus, a human relative who lived in Africa more than 2 million years ago, was a dietary adaptation for feeding on either ...

Meat-eating dinosaur from Argentina had bird-like breathing system

... studies. "In sauropods, pneumaticity was key to the evolution of large body size and long necks; in birds it was key to the evolution of a light skeleton and flight," Wilson said. "The ancient history and evolutionary path of this feature is full of surprising turns, the explanations for which must ...

'Top Secret' Technology To Help U.S. Swimmers Trim Times at Beijing Olympics

... to make a difference, and I'm excited to keep helping the team for as long as they need me." Wei is also currently working with the U.S. Olympic skeleton team and looking at new flow measurement techniques to help shave precious milliseconds off downhill times. This news release was issued on behalf ...

'Top secret' technology to help US swimmers trim times at Beijing Olympics

... to make a difference, and I'm excited to keep helping the team for as long as they need me." Wei is also currently working with the U.S. Olympic skeleton team and looking at new flow measurement techniques to help shave precious milliseconds off downhill times. ...

Academy publishes first biography of artist-naturalist Benjamin Waterhouse Hawkins

... of people and introduced the world to "dinosauromania." In 1868, he wowed the world again by assembling the first reasonably complete dinosaur skeleton found anywhere in the world, Hadrosaurus foulkii, unearthed in Haddonfield, N.J., and displayed at The Academy of Natural Sciences. In November, the ...

A bitter pill to swallow

... threatening endangered species. In Vietnam, we estimate between 5-10 tiger skeletons are sold annually to be used in traditional medicine. With each skeleton fetching approximately $20,000, there is a strong incentive to poach and trade tigers that we must address from the grassroots up." "An overview ...

Genome sequence of small marine creature sheds light on vertebrate origins

... , +86-20-3933-2990) 3. Hijacking of neural crest genes In vertebrates, the peripheral nervous system and the craniofacial skeleton develop from a specific set of cells, known as neural crest cells. In this report, researchers in the laboratory of Dr. Marianne Bronner-Fraser at ...

Queen's marine biologist investigates aliens beneath the waves

... extremely common in Strangford Lough, the Chinese mitten crab, already found in Ireland, and two species that have not arrived here yet, the Japanese skeleton shrimp and a colonial sea squirt. The site is at www.marlin.ac.uk/marine_aliens Records of marine life should include as a minimum what was ...

Mysterious mountain dino may be a new species

... A partial dinosaur skeleton unearthed in 1971 from a remote British Columbia site is the first ever found in Canadian mountains and may represent a new species, according to a ...

Origin of cells for connective tissues of skull and face challenged

... some of the underlying assumptions that have led to the conventional wisdom about the source of the embryonic cell lineages that give rise to the skeleton and connective tissue of the head and face." In the mouse embryo at eight days gestation, Weston and collaborators used high-resolution imaging ...

Genome of marine organism tells of humans' unicellular ancestors

... choanoflagellates have five immunoglobulin domains, though they have no immune system; collagen, integrin and cadherin domains, though they have no skeleton or matrix binding cells together; and proteins called tyrosine kinases that are a key part of signaling between cells, even though Monosiga is not ...
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(Date:7/10/2014)... Foundation, a nonprofit organization funding cutting-edge, innovative research ... glaucoma and macular degeneration, today announced the recipients ... scientists in 19 U.S. states, the District of ... . , With these latest grants, BrightFocus ... research funding in 2014. , The research projects ...
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(Date:7/10/2014)... University Medical Center (CUMC) researchers have created a way ... pigmentosa (RP), a leading cause of vision loss. The ... induced pluripotent stem (iPS) cell technology to transform skin ... a patient-specific model for disease study and preclinical testing. ... Tsang, MD, PhD, showed that a form of RP ...
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(Date:7/10/2014)... The benefits of medical imaging far outweigh the ... Right Way, with The Right Radiation Dose. However, overuse ... Mayo Clinic is leading a collaborative effort to ensure ... published online in the Journal of Patient Safety ... Joint Commission, the Intersociety Accreditation Commission, and the Centers ...
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(Date:7/9/2014)... MA -- Vasectomy was associated with a small increased ... advanced or lethal prostate cancer according to a new ... researchers found that the association remained even among men ... of lethal cancer cannot be explained by diagnostic bias. ... date to look at the link between vasectomy and ...
(Date:7/9/2014)... cancer, researchers have uncovered mutations in a cell-signaling pathway ... knowledge may expand treatments for patients because drugs targeting ... are in clinical trials. , Reporting July 9 in ... (TCGA), including researchers at Washington University School of Medicine ... studied tumors from 230 patients with lung adenocarcinoma. , ...
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