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Prehistoric Predators With Supersized Teeth Had Beefier Arm Bones
January 4, 2012 — The toothiest prehistoric predators also had beefier arm bones, according to results of a new study. Saber-toothed tigers may come to mind, but these extinct cats weren't the only animals with ... > full story -
The Bechstein's Bat, More Mediterranean Than Thought
January 4, 2012 — The Bechstein’s bat or Myotis bechsteinii lives in deciduous forests. It used to be very common in the Holocene era, but today there are only a few dispersed groups, despite the fact that a ... > full story -
New Theory Emerges for Where Some Fish Became Four-Limbed Creatures
December 27, 2011 — A small fish crawling on stumpy limbs from a shrinking desert pond is an icon of can-do spirit, emblematic of a leading theory for the evolutionary transition between fish and amphibians. This ... > full story -
Over 65 Million Years, North American Mammal Evolution Has Tracked With Climate Change
December 27, 2011 — Climate changes profoundly influenced the rise and fall of six distinct, successive waves of mammal species diversity in North America over the last 65 million years, shows a novel statistical ... > full story -
Bacteria's Move from Sea to Land May Have Occurred Much Later Than Thought
December 22, 2011 — A new analysis indicates the shift of soil bacteria Azospirillum may have occurred only 400 million years ago, rather than approximately two billion years earlier as originally ... > full story -
Genetic Study of Black Chickens Shed Light on Mechanisms Causing Rapid Evolution in Domestic Animals
December 22, 2011 — The genetic changes underlying the evolution of new species are still poorly understood. For instance, we know little about critical changes that have happened during human evolution. Genetic studies ... > full story -
Cultural Diversification Also Drives Human Evolution
December 22, 2011 — Changes in social structure and cultural practices can also contribute to human evolution, according to a new ... > full story -
Chinese Fossils Shed Light on Evolutionary Origin of Animals from Single-Cell Ancestors
December 22, 2011 — Evidence of the single-celled ancestors of animals, dating from the interval in the Earth's history just before multicellular animals appeared, has been discovered in 570 million-year-old rocks from ... > full story -
'Head-First' Diversity Shown to Drive Vertebrate Evolution
December 21, 2011 — A new analysis of two adaptive radiations in the fossil record found that these diversifications proceeded "head first." Head features diversified before body shapes and types. This suggests that ... > full story -
Skeletons Point to Columbus Voyage for Syphilis Origins
December 20, 2011 — Skeletal evidence that reputedly showed signs of syphilis in Europe and other parts of the Old World before Christopher Columbus made his voyage in 1492 does not hold up when subjected to ... > full story
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