Diplodocids—large herbivorous dinosaurs with long necks and tails—may have been able to move their tails like bullwhips at speeds of up to 33 meters per second (more than 100 kilometers per hour), according to a modeling study published in Scientific Reports. However, these findings contradict those of a previous study, which proposed that a hypothetical structure attached to the end of a diplodocid tail—similar to a tuft at the end of a bullwhip—could move faster than the speed of sound (340 meters per second) and create a small supersonic boom.
