Dinosaurs long dominated Earth's land ecosystems with a multitude of forms including plant-eating giants like Argentinosaurus, meat-eating brutes like Tyrannosaurus and weirdos like Therizinosaurus, ...

with its Freddy Krueger-like claws. But the origin of dinosaurs – precisely when and where they first appeared – remains a bit of a puzzle. Researchers are now proposing a surprising location ...

with its Freddy Krueger-like claws. But the origin of dinosaurs – precisely when and where they first appeared – remains a bit of a puzzle. Researchers are now proposing a surprising location ...