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Early Primate Had Transitional Lemur-Like Grooming Claw
January 10, 2012 — A new study examines the first extinct North American primate with a toe bone showing features associated with the presence of both nails and a grooming claw, indicating our primate ancestors may ... > full story -
Could Siberian Volcanism Have Caused the Earth's Largest Extinction Event?
January 9, 2012 — Around 250 million years ago there was a mass extinction so severe that it remains the most traumatic known species die-off in Earth's history. Although the cause of this event is a mystery, it has ... > full story -
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 -
Leaping Lizards and Dinosaurs Inspire Robot Design
January 4, 2012 — A new study of how lizards use their tails when leaping through the trees shows that they swing the tail upward to avoid pitching forward after a stumble. Theropod dinosaurs -- the ancestors of birds ... > 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 -
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 -
Plant-Eating Dinosaur Discovered in Antarctica
December 19, 2011 — For the first time, the presence of large bodied herbivorous dinosaurs in Antarctica has been recorded. Until now, remains of sauropoda had been recovered from all continental landmasses, except ... > full story -
Mercury Releases Into the Atmosphere from Ancient to Modern Times
December 14, 2011 — In pursuit of riches and energy over the last 5,000 years, humans have released into the environment 385,000 tons of mercury, the source of numerous health concerns, according to a new study that ... > full story -
Follow Your Nose: Compared to Neanderthals, Modern Humans Have a Better Sense of Smell
December 14, 2011 — High-tech medical imaging techniques were recently used to access internal structures of fossil human skulls. Researchers used sophisticated 3-D methods to quantify the shape of the basal brain as ... > full story
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