Earliest long-necked dinosaur discovered in Brazil
Scientists claim to have discovered three 'well-preserved' skeletons of the oldest long-necked dinosaur in the Brazilian state of Rio Grande do Sul. Called 'Macrocollum itaquii', the vegetarian species weighed nearly 100 kilograms and is about 225 million-years-old. The discovery shows that dinosaurs chose to live in groups rather than alone, the scientists said. 