BEVERLY HILLS, Calif., May 1, 2012 /PRNewswire/ -- Extraordinarily rare natural history specimens, including skeletons of exotic dinosaurs and a fist-size meteorite from Mars, are ready for

Researchers from the University of Cape-Town, the Museum of Nature and Science in Dallas, and Temple University have discovered that duck-billed dinosaurs endured long, dark polar winters.

A new genus and species of hadrosaur (duck-billed) dinosaur – the oldest duck-billed dinosaur known from North America – has been named by scientists who expect the discovery to shed new light on dinosaur evolution.

Tyrannosaurus rex was an opportunistic feeder, not a top predator, paleontologists say.

University of Alberta researchers determined that a fossilized dinosaur bone found in New Mexico confounds the long established paradigm that the age of dinosaurs ended between 65.5 and 66 million years ago.