WASHINGTON, Jan 23 (Reuters) - Dinosaurs long dominated Earth's land ecosystems with a multitude of forms including ...

A newfound "chicken-size" dinosaur, recently unearthed in Wyoming, changes what paleontologists thought they knew about how dinosaurs spread across the globe. When you purchase through links on ...

How and when did dinosaurs first emerge and spread across the planet more than 200 million years ago? That question has for decades been a source of debate among paleontologists faced with ...