On this day, 36 years ago, November 2, 1989 (October 5, 1989 in the lunar calendar), the earliest dinosaur fossils were discovered in Argentina 230 million years ago. The earliest dinosaur fossils discovered in Argentina 230 million years ago In November 1989, Argentine scientists discovered the fossils of the two oldest dinosaurs in the world at the foot of the Andes Mountains. Fossilized dinosaurs lived 230 million years ago. It is a two-legged carnivore, 2-2.5 meters long and weighs more than 100 kilograms. Its head resembles a bird's head, its neck is long, it runs on two legs, its forelimbs are short, and has long claws. American archaeologist Paul Sereno, who went to Argentina to participate in the excavation, believes that this dinosaur was not a direct ancestor of later dinosaurs, but was closely related to more primitive dinosaurs. The earliest dinosaur fossil discovered in the UK 175 million years ago On October 30, 1990, the British "Daily Telegraph" reported that the world's earliest dinosaur fossil was discovered in the UK, which lived 175 million years ago. The dinosaur fossil was discovered by Brian Bornham, a student at the University of Northampton's Nann College, while digging at the Cotswood Quarry. The dinosaur was about 8.84 meters long and 2.74 meters high and is now on display at the Glomerset City Museum. Bornham said dinosaurs discovered in China and the United States were much later than this dinosaur. Dinosaurs migrated around the world from Cotswats, when Britain was connected to the European continent and the Americas through swamps and shallow seas.