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The evolution of brain wiring: Navigating to the neocortex
A new study is providing fascinating insight into how projections conveying sensory information in the brain are guided to their appropriate targets in different species. (2011-03-23)
Large brains in mammals first evolved for better sense of smell
High-resolution CT scans reveal that tiny mammals from the Jurassic fossil beds of China had much larger brains than expected for specimens of their period. (2011-05-19)
New study reveals link between 'climate footprints' and mass mammal
An international team of scientists have discovered that climate change played a major role in causing mass extinction of mammals in the late quaternary era, 50,000 years ago. (2010-05-18)
How the mouse outlived the giant
By scanning the fossil remains of mammal-like reptiles from the Karoo of South Africa, Dr. (2016-06-22)
Researchers look to imprinted genes for clues to fetal growth restriction in cloned swine
Researchers at North Carolina State University have found that intrauterine growth restriction (IUGR), which results in low birth weight and long-term deleterious health effects in cloned swine, is linked to a type of gene -- known as an imprinted gene -- found only in placental mammals. (2009-07-20)
Molecular evolution is echoed in bat ears
Echolocation may have evolved more than once in bats, according to new research from the University of Bristol published this week in Proceedings of the National Academy of Sciences. (2008-09-04)
Without humans, the whole world could look like Serengeti
The fact that the greatest diversity of large mammals is found in Africa reflects past human activities -- and not climatic or other environmental constraints. (2015-08-20)
'Killer' B cells demonstrate evolutionary link between fish and mammal immune systems
Researchers from the University of Pennsylvania School of Veterinary Medicine have discovered a unique evolutionary link between the immune systems of fish and mammals in the form of a primitive version of B cells, white blood cells of the immune system. (2006-09-20)
Tree-dwelling mammals climb to the heights of longevity
The squirrels littering your lawn with acorns as they bound overhead will live to plague your yard longer than the ones that aerate it with their burrows, according to a University of Illinois study. (2010-02-24)
A life-changing partnership
Researchers at EMBL Heidelberg identified a novel regulatory protein complex in Drosophila that explains another protein's double life, and which likely plays an important role in mammals, too. (2010-06-25)
At high altitude, carbs are the fuel of choice
Mice living in the high-altitude, oxygen-starved environment of the Andean mountains survive those harsh conditions by fueling their muscles with carbohydrates. (2012-12-06)
Researchers discover 3 extinct squirrel-like species
Paleontologists have described three new small squirrel-like species that place a poorly understood Mesozoic group of animals firmly in the mammal family tree. (2014-09-10)
Whales hear us more than we realize
Killer whales and other marine mammals likely hear sonar signals more than we've known. (2014-05-01)
Size matters: Large Marine Protected Areas work for dolphins
Ecologists in New Zealand have shown for the first time that Marine Protected Areas - long advocated as a way of protecting threatened marine mammals - actually work. (2012-03-26)
Tasty meal out of reach
Dutch Rubicon laureate Chris Smit has concluded that small mammals, such as rabbits and mice, play a major role in the development of natural diversity. (2008-07-03)
Fossil discovery represents new milestone in early mammal evolution
A well-preserved fossil discovered in northeast China provides new information about the earliest ancestors of most of today's mammal species -- the placental mammals. (2011-08-25)
Not the end of the world: Why Earth's greatest mass extinction was the making of modern mammals
The ancient closest relatives of mammals -- the cynodont therapsids -- not only survived the greatest mass extinction of all time, 252 million years ago, but thrived in the aftermath, according to new research published today in Proceedings of the Royal Society B. (2013-08-28)
Field Museum study reveals evolution of malaria
A Field Museum study published today in Molecular Phylogenetics and Evolution reveals a new take on the evolution of different malaria species and contributes to the ongoing search for the origins of malaria in humans. (2016-03-23)
Scientists find 'redesigned hammer' that forged evolution of pregnancy in mammals
Yale researchers have shown that the origin and evolution of the placenta and uterus in mammals is associated with evolutionary changes in a single regulatory protein, according to a report in Proceedings of the National Academy of Sciences. (2008-09-18)
Mammals almost wiped out with the dinosaurs
A study by the Milner Centre for Evolution at the University of Bath has found that over 90 percent of mammal species were wiped out by the same asteroid that killed the dinosaurs in the Cretaceous period 66 million years ago, significantly more than previously thought. (2016-06-19)
The hepatitis A virus is of animal origin
The hepatitis A virus can trigger acute liver inflammation which generally has a mild course in small children but which can become dangerous in adults. (2015-11-03)
Biologist gains insight into genetic evolution of birds
Jay Storz, a Susan J. Rosowski Associate Professor of Biological Sciences, led a research group that examined the evolution of multi-gene families shared by birds and mammals. (2014-12-11)
Freeze and flee: The costly 'escape' response of narwhals
East Greenland narwhals exhibit both 'freeze' and 'flee' responses when escaping from threats, researchers report. (2017-12-07)
Mouse to elephant? Just wait 24 million generations
Scientists have for the first time measured how fast large-scale evolution can occur in mammals, showing it takes 24 million generations for a mouse-sized animal to evolve to the size of an elephant. (2012-01-30)
Do birds have a good sense of smell?
Sight and hearing are the most important senses for birds -- this is at least the received wisdom. (2008-07-16)
New research finds deep evolutionary origins of a unique mammalian anatomical pattern
By performing detailed dissections and corresponding examinations of embryological development, researchers at Midwestern University, led by Margaret Hall, Ph.D. and Jeffrey Plochocki, Ph.D., show that the muscles that control the unique mammalian perineal structures follow a surprisingly ancient pattern. (2017-08-23)
Eye size determined by maximum running speed in mammals
Maximum running speed is the most important variable influencing mammalian eye size other than body size, according to new research from the University of Texas at Austin. (2012-05-02)
Study sheds new light on extinction risk in mammals
An international research team led by Colorado State University successfully measured habitat fragmentation for over 4,000 species of land-dwelling mammals. (2017-07-03)
Evolution of the animal temperature sensor: The functional adaptation to environmental change
Professor Makoto Tominaga and Assistant Professor Shigeru Saito at The National Institute for Physiological Sciences (Okazaki Institute for Integrative Bioscience) demonstrate that the molecule called TRP channels, serve as temperature sensors in animals, sense different temperature ranges between mammals and western clawed frog (amphibians) even the same type of the TRP channels have been investigated. (2011-04-07)
Strange marine mammals of ancient North Pacific revealed
The pre-Ice Age marine mammal community of the North Pacific formed a strangely eclectic scene, research by a Geology Ph.D. student reveals. (2014-02-04)
Global map shows new patterns of extinction risk
The most detailed world map of mammals, birds and amphibians ever produced shows that endangered species from these groups do not inhabit the same geographical areas, says new research published today. (2006-11-01)
Egg-laying beginning of the end for dinosaurs
They laid eggs, occupied many ecological niches with only one species and competed with one another. (2012-04-17)
Irish mammals under serious threat from 'invasional meltdown'
Some of Ireland's oldest inhabitants are facing serious threat and possible extinction because of foreign species, according to researchers at Queen's University. (2012-02-21)
Mountain mice show adaptation to altitude
Mice at altitude have adapted to use oxygen more efficiently during exercise than their low-altitude counterparts by showing a fuel preference for carbohydrates over fats, Canadian and Peruvian scientists reveal. (2010-07-01)
Size matters: Preventing large mammal extinction
Saving large mammals such as elephants and rhino from extinction could be made more effective by focusing efforts on individual species as well as their habitats. (2005-07-21)
Molecular biology fills gaps in knowledge of bat evolution
One in five mammals living on Earth is a bat, yet their evolutionary history is largely unknown because of a limited fossil record and conflicting or incomplete theories about their origins and divergence. (2005-02-02)
Researchers discover that sheep need retroviruses for reproduction
A team of scientists from Texas A&M University and the University of Glasgow Veterinary School in Scotland has discovered that naturally occurring endogenous retroviruses are required for pregnancy in sheep. (2006-09-11)
Mesozoic mammals -- what do we know from China?
The most exciting findings covering Mesozoic mammals over the last two decades have come from the Jurassic and Cretaceous periods of China. (2015-02-02)
Goat kids can develop accents
The ability to change vocal sounds and develop an accent is potentially far more widespread in mammals than previously believed, according to new research on goats from Queen Mary, University of London. (2012-02-15)
Male or female?
The Y chromosome, which distinguishes males from females at the genetic level, appeared some 180 million years ago. (2014-04-23)
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