Lovers of fine sauropods will be well aware that, along with the inadequately described Indian titanosaur Bruhathkayosarus , the other of the truly super-giant sauropods is Amphicoelias fragillimus .  Known only from a single neural arch of a dorsal vertebra, which was figured and briefly described by Cope (1878) and almost immediately either lost or destroyed, it’s the classic “one that got away”, the animal that sauropod