Study: Predatory dinosaurs had bird-like pulmonary system
What could the fierce dinosaur T. rex and a modern songbird such as the sparrow possibly have in common? Their pulmonary systems may have been more similar than scientists previously thought, according to new research from Ohio University and Harvard University. Though some scientists have proposed that predatory dinosaurs had lungs similar to crocodiles and other reptiles, a new study pub...Did feathered dinosaurs exist?
New evidence raises questions about current theoryBiologists examining evidence for the claim that birds evolved from dinosaurs have reached some surprising new conclusions. However, they caution that "the problem of avian origins is far from being resolved." Their analysis is published online October 10, 2005 in the Journal of Morphology, published by John Wiley & Sons, Inc. and available vi...Large dinosaurs were extremely hot in their day, UF study finds
If you think dinosaurs are hot today, just think back to about 110 million years ago when they really ran hot and heavy. That is a 118-degree Fah...Trotting with emus to walk with dinosaurs
One way to make sense of 165-million-year-old dino tracks may be to hang out with emus, say paleontologists studying thousands of dinosaur footprints at the Red Gulch Dinosaur Tracksite in northern Wyoming. Because they are about the same size, walk on two legs and have similar feet, emus turn out to be the best modern version of the enigmatic reptiles that once trotted along a long-lost coastlin...Dinosaurs -- stones did not help with digestion
The giant dinosaurs had a problem. Many of them had narrow, pointed teeth, which were more suited to tearing off plants rather than chewing them. But how did they then grind their food? Until recently many researchers have assumed that they were helped by stones which they swallowed. In their muscular stomach these then acted as a kind of 'gastric mill'. But this assumption does not seem to be co...