Dinosaur Big City Part 3- The Dinosaur Train arrives in Laramidia, the Dinosaur Big City, and Buddy and the Pteranodon family explore the crowded "dinosaur metropolis." At the Theropod Convention, our kids reunite with Annie Tyrannosaurus and her parents Dolores and Boris, and they all meet the multi-horned mayor, Mayor Kosmoceratops!/ Dinosaur Big City Part 4- Buddy and Tiny help King Cryolophosaurus overcome his fear of performing in front of his biggest audience ever, and he wows a large dinosaur audience when he sings his new song, "Whole Lotta Theropods" at the Theropod Convention in Laramidia, the Dinosaur Big City.