“Preserved blood vessel structures, like we have found in Scotty’s rib bone, appear linked to areas where the bone was ...

But T. rex wasn’t the only dinosaur with really tiny arms. Many therapods (a group of two-legged carnivorous dinosaurs related to birds) had these small arms, ...

Scientists identified a new species of Tyrannosaurs that's likely a predecessor to T. Rex. The new species shows the dinosaurs got bigger a lot earlier than scientists originally thought. It also ...