Trini is convinced she has discovered a dinosaur bone. A visit to a American Museum of Natural History shows that she actually has the femur of a horse. Also at the museum, a young student reflects on her part-time work with paleontology. Lisa discovers a ""dinosaur graveyard"" in Utah, where several scientists uncover thousands of bones.ANIMATIONS: Fossilization of animal bones; stop-action assembly bones of an animal; scale replication of a dinosaur cartoon.THE BLOODHOUND GANG: ""The Case of the 264-Pound Burglar, Part One."" (Recycled from Episode 6) An old lady's life savings is stolen from her attic. Did the culprit weigh 264 pounds, as a found weight card suggests? (Concludes in next episode.)