Scientists claim to find 'first giant' dinosaur in Argentina
Researchers in Argentina have claimed to discover the world's "first giant" dinosaur, a 200-million-year-old species, about three times the size of the largest Triassic dinosaurs from its era. The herbivores could grow up to 10 metres in height and weigh around 10 tonnes. Gigantism was thought to develop during the Jurassic period, around 180 million years ago, until this discovery.