Tyrannosaurus rex started life as large as a Border Collie, a new paper reports
Tyrannosaurus rex started life as large as a Border Collie, a new paper reports To pet, or not to pet? Hmmm… A new discovery shows that the king of the dinosaurs started life no larger than your average dog. Artist’s impression of a juvenile tyrannosaur. Image credits Julius Csotonyi. Tyrannosaurus rex (‘rex’ is Latin for ‘king’) is perhaps one of the best-known dinosaurs of all time. Movies such as Jurassic Park, and the dinosaur’s own impressive proportions (up to 40 feet / 12 meters in length as an adult) and body shape have cemented its image as a deadly, unstoppable predato...