5209901 Thigh-Bone of the Largest of the Dinosaurs, Atlantosaurus (litho) by European School, (19th century); Private Collection; (add.info.: Thigh-Bone of the Largest of the Dinosaurs, Atlantosaurus. From a cast in the Natural History Museum. Length 6 feet 2 inches. Illustration for Extinct Monsters by H N Hutchinson with illustrations by J Smit and others (Chapman and Hall, 1893).); by Look and Learn.