Dinosaurs as big as buses or five-story buildings would not be possible if their bones were dense and heavy like ours. Like present-day birds, dinosaurs had hollow bones with inner structures known as air sacs, which made their skeletons lighter and less dense.
Washington [US], September 15 (ANI): Researchers have discovered a new extinct species of lizard-like reptile that belongs to the same ancient lineage as New Zealand's living tuatara. A team of scientists describe the new species Opisthiamimus gregori, which once inhabited Jurassic North Ame
London [UK], June 21 (ANI): Footprints from at least six different species of dinosaurs, the very last dinosaurs to walk on the UK soil 110 million years ago, have been found in Kent, a new report has announced.