A hole in a Triceratops named Big John probably came from combat

The puncture adds to evidence that the three-horned dinosaurs battled each other.

The largest known Triceratops features a hole in its bony frill that suggests the dinosaur, called Big John, fought with its peers. F. BACCHIA/ZOIC LLC

An exceptionally preserved young dinosaur with feathers from Germany

A new species of feathered dinosaur discovered in southern Germany is further changing the perception of how predatory dinosaurs looked. The fossil of Sciurumimus albersdoerferi, which lived about 150 million years ago, provides the first evidence of feathered theropod dinosaurs that are not closely related to birds. The fossil is described in a paper published in the Proceedings of the National Academy of Sciences.

Skull of Sciurumimus albersdoerferi (photo taken at Fossil Show, Munich). Credit: Ghedo / Wikimedia Commons

Unexpected crash diet for dinosaurs

Scientists have developed a new technique to accurately measure the weight and size of dinosaurs and discovered they are not as heavy as previously thought.

University of Manchester biologists used lasers to measure the minimum amount of skin required to wrap around the skeletons of modern-day mammals, including reindeer, polar bears, giraffes and elephants.

Greenhouse gas dinosaurs

Need to heat your planet? Install some dinosaurs. The biggest plant-eating dinosaurs pumped out huge amounts of greenhouse gas, helping to keep Earth toasty warm, according to new calculations.

Swamp-bound 'Brontosaurus' (now Apatosaurus), painted in 1897 by Knight, with static terrestrial Diplodocus in background

New duck-billed dinosaur was a 'chewing machine'

Prehistoric plants had a lot to fear from Gryposaurus monumentensis – with around 800 teeth inside its massive jaws, the 9-metre-long (30 feet) duck-billed dinosaur could have made a snack of tree branches as well as foliage. The creature lived in what is now southern Utah, some 75 million years ago.

The duck-billed dinosaur was 9 metres in length (30 feet), and lived around 75 million years ago in the late Cretaceous period (Illustration: Larry Felder)