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

"We think of dinosaurs as these giant behemoths, but they didn't start out that way." With a recent radioisotopic analysis of the fossil specimens dating the remains to around 230 million years old, this tiny 'terrible lizard' named Ahvaytum bahndooiveche is now the oldest-known dinosaur from Laurasia,

Dinosaurs, the colossal creatures that dominated the Earth millions of years ago, have long fascinated scientists and the public alike. Each new discovery not only ignites imaginations but also deepens our understanding of these prehistoric giants.