The Two Medicine Dinosaur Center has several unique displays, including the world's longest dinosaur and actual remains of new dinosaur species. Among these exhibits, you will find: Seismosaurus!      This skeletal model of Seismosaurus was determined by the Guinness Book of World Records to be the longest dinosaur museum exhibit in the world. The model was created because no real-bone mounts of any of these super-large dinosaurs exist, and it is important to have a physical representation of a specimen of this size. The animal was, at the time of construction, and still is, the longest dinosaur discovered. BOB!      This "block of bones" (hence the "bob" acronym) is over 11 feet in length, and contains over 100 dinosaur bones and fragments from at least 3 individuals and 2 separate species. It took more than 2 years of painstaking work to safely bring this monster 5 1/2 ton block into the Center. Preparation of this, and other, fossils is ongoing here in the Center, and you are able to talk to the people who are actually doing the preparation of these specimens most days.      These are but 2 of the many interesting exhibits you will find when you visit the Two Medicine Dinosaur Center. The exhibits are constantly changing, so come back often!!