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All Articles Tagged As: extinction
Analysis of ancient DNA has shown that Woolly mammoths and prehistoric horses grazed on the North American Plains, for several thousand years longer than hitherto assumed.
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 | Ancient DNA retrieved from extinct horse species from around the world has challenged one of the textbook examples of evolution -- the fossil record of the horse family Equidae over the past 55 million years. ...> Full Article |
 | Evidence buried in the chromosomes of animals and plants strongly suggests only one group -- mammals -- have seen their genomes shrink after the dinosaurs' extinction. What's more, that trend continues today, say Indiana University Bloomington scientists in the first issue of a new journal, Genome Biology and Evolution. ...> Full Article |
 | Drifting across the world's oceans are a group of unicellular marine microorganisms that are not only a crucial source of food for other marine life -- but their fossils, which are found in abundance, provide scientists with an extraordinary record of climatic change and other major events in the history of the Earth. ...> Full Article |
 | The woolly mammoth died out several thousand years ago, but the genetic material they left behind is yielding new clues about the evolution of mammals. In a study published online in Genome Research, scientists have analyzed the mammoth genome looking for mobile DNA elements, revealing new insights into how some of these elements arose in mammals and shaped the genome of an animal headed for extinction. ...> Full Article |
 | DNA studies by scientists show 1 critically endangered grouper species is really 2 ...> Full Article |
 | Researchers have brought an extinct date palm back to life by resurrecting the oldest seed ever ...> Full Article |
 | A large genetic study of the extinct woolly mammoth has revealed that the species was not one large homogenous group, as scientists previously had assumed, and that it did not have much genetic diversity. ...> Full Article |
 | Scientists have discovered how a microscopic organism has benefited from nearly 80 million years without sex. ...> Full Article |
 | The mystery of what killed the Neanderthals has moved a step closer to resolution after an international study led by the University of Leeds has ruled out one of the competing theories - catastrophic climate change - as the most likely cause. ...> Full Article |
 | Widespread starvation in species suggests problems in food chain ...> Full Article |
 | An Alaska wolf that disappeared about 12,000 years ago just made another appearance. ...> Full Article |
 | Approximately 250 million years ago, vast numbers of species disappeared from Earth. This mass-extinction event may hold clues to current global carbon cycle changes, according to Jonathan Payne, assistant professor of geological and environmental sciences. Payne, a paleobiologist who joined the Stanford faculty in 2005, studies the Permian-Triassic extinction and the following 4 million years of instability in the global carbon cycle. In the July issue of the Geological Society of America Bulletin, Payne presented evidence that a massive, rapid release of carbon may have triggered this extinction. ...> Full Article |
 | The abundant diversity of characteristics within species likely helped fuel the proliferation and evolution of an odd-looking creature that emerged from an unprecedented explosion of life on Earth more than 500 million years ago. University of Chicago paleontologist Mark Webster reports this finding in the July 27 issue of the journal Science. ...> Full Article |
 | In paleontology, discovery can be dirty. And the search can lead to some rugged places. This summer, Lamar University students and their professor, Jim Westgate, headed for the Badlands of Utah to do some paleontological prospecting. ...> Full Article |
One of the largest volcanic eruptions in Earth's history may not have had the cataclysmic effects that some scientists have proposed, Cambridge-led research has revealed.
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 | The ancient gray wolves of Alaska became extinct some 12,000 years ago, and the wolves in Alaska today are not their descendents but a different subspecies, an international team of scientists reports in the July 3 print edition of the journal Current Biology. ...> Full Article |
 | The prestigious British journal Nature this week published a Binghamton faculty member's new insights into the world's oldest trees. ...> Full Article |
 | A University of Adelaide project led by zoologist Dr Jeremy Austin is investigating whether the world-fabled Tasmanian Tiger may have survived beyond its reported extinction in the late 1930s. ...> Full Article |
The extinction of many large mammals at the end of the Ice Age may have packed an even bigger punch than scientists have realized. To the list of victims such as woolly mammoths and saber-toothed cats, a Smithsonian-led team of scientists has added one more: a highly carnivorous form of wolf that lived in Alaska, north of the ice sheets.
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Some ancient-DNA evidence has offered new clues to a very cold case: the disappearance of the last woolly mammoths, one of the most iconic of all Ice Age giants, according to a recent article. DNA lifted from the bones, teeth, and tusks of the extinct mammoths revealed a "genetic signature" of a range expansion after the last interglacial period. After the mammoths' migration, the population apparently leveled off, and one of two lineages died out.
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Scientists from the Universities of Sheffield and Cambridge have discovered that Mother Nature caused a massive ozone depletion event, some 251 million years ago, during the greatest mass extinction event of all time.
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Two University of Oregon researchers are on a multi-institutional 26-member team proposing a startling new theory: that an extraterrestrial impact, possibly a comet, set off a 1,000-year-long cold spell and wiped out or fragmented the prehistoric Clovis culture and a variety of animals across North America almost 13,000 years ago.
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New scientific findings suggest that a large, extraterrestrial rock may have exploded over North America 13,000 years ago, explaining riddles that scientists have wrestled with for decades, including an abrupt cooling of the atmosphere and the extinction of large mammals.
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Understanding the importance of reproductive rates could help conservation managers zero in on which species are in the greatest peril
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Climate – and not modern humans – was the cause of the Neanderthal extinction in the Iberian Peninsula. Such is the conclusion of the University of Granada research group RNM 179 - Mineralogy and Geochemistry of sedimentary and metamorphic environments, headed by professor Miguel Ortega Huertas and whose members Francisco José Jiménez Espejo, Francisca Martínez Ruiz and David Gallego Torres work jointly at the department of Mineralogy and Petrology of the University of Granada (Universidad de Granada) and the Andalusian Regional Institute of Earth Sciences (CSIC-UGR).
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 | For nearly a century, anthropologists have been debating the relationship of Neandertals to modern humans. Central to the debate is whether Neandertals contributed directly or indirectly to the ancestry of the early modern humans that succeeded them. ...> Full Article |
 | Climate change could trigger "boom and bust" population cycles that make animal species more vulnerable to extinction, according to Christopher C. Wilmers, an assistant professor of environmental studies at the University of California, Santa Cruz. ...> Full Article |
Scientists have long thought that the mass extinction of the dinosaurs around 65 millions years ago opened the door for modern mammal species to proliferate. But an international team of scientists has created a mammoth record of evolutionary timing, showing that the origins and diversification of existing mammal species - including human ancestors - don’t synch with the demise of the dinosaurs.
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