Dinosaurs roamed the earth for millions and millions of years. Museum visitors are awed by the massive skeletons/fossils/creatures on display. But how did the fossils of a colossal diplodocus make the 145-million-year journey from the prehistoric plains of Utah to the Smithsonian Museum of today? Acclaimed author and illustrator, Jessie Hartland beautifully presents this informative and fascinating history of the diplodocus: from its discovery in 1923 in Utah to its arrival in the hallowed halls of this world-famous museum.