This 125 Million-Year-Old Dinosaur Had Spikes Like a Porcupine

A 125-million-year-old dinosaur discovered in China had hollow, porcupine-like spikes never before seen in dinosaurs. For more than 200 years, paleontologists have studied a major group of plant-eating dinosaurs known as Iguanodontia. These dinosaurs, including the well-known Iguanodon, were first described in the early 19th century and are recognized for their beak-like mouths and strong [...]