Dinosaurs: Ancestor of long-necked Diplodocus ran swiftly on two legs
The gigantic and slow sauropod dinosaurs like Diplodocus had small two-legged ancestors – and one, Thecodontosaurus, was quick and nimble 19 January 2022 By Christa Lesté-Lasserre Thecodontosaurus antiquus Stocktrek Images, Inc. / Alamy An early ancestor of large, long-necked, four-legged dinosaurs like Brachiosaurus and Diplodocus was a quick, nimble biped that probably used its forelimbs … Read more