Dinosaurs haven’t roamed the Earth for millions of years, but the nature of their reign has sparked no shortage of controversial debates among paleontologists that remain unresolved today. Late last ...

New research is trying to remake the case that fossils known as Nanotyrannus were their own species, rather than a teenage Tyrannosaurus rex. By Asher Elbein Asher Elbein previously wrote about ...

For decades, scientists argued over whether a collection of small tyrannosaur fossils from the American West were teenage ...

A new study of long-debated dinosaur fossils has found growth patterns inconsistent with those of T. rex, suggesting the bones belong to a distinct species, but other experts aren't convinced. When ...

A dinosaur fossil listed for sale in London for $20 million embodies one of the most heated debates in paleontology. By Julia Jacobs and Zachary Small Zachary Small reported from London, and Julia ...