For huge ancient kangaroos, hopping was dicey

Oct 16, 2014

For huge ancient kangaroos, hopping was dicey

Kangaroos hop, right? Well, not all of them. Scientists said that a biomechanical and statistical analysis of fossil bones of a group of huge extinct kangaroos shows that the largest of the bunch likely could not hop as their modern-day relatives do. The study, ...

Oct 16, 2014

Toothy tyrant from the Jurassic period was 9 meters long

A forerunner of today’s crocodiles that lurked in coastal waters and estuaries some 150 million years ago measured 9.26 meters (some 30 feet) from snout to tail. Paleontologists from half a dozen European countries took a fresh look at the classification of so-called crocodylomorphs ...

Oct 9, 2014

Highways fragment Southern California mountain lion gene pool

Mountain lions in Southern California are under growing pressure from a shrinking gene pool, fragmented by highways and urban sprawl that has left the cats’ territories increasingly isolated from each other, a study published on Wednesday showed. Analysis of DNA from about 350 mountain ...