Buddy and the Pteranodon kids hop on the Dinosaur Train to meet some of the biggest dinosaurs around! They meet Allie Alamosaurus an enormous long-necked plant-eating sauropod; Denise Diplodocus whose neck and tail the kids mistake for a snake and a bridge; and Apollo Apatosaurus a huge long-necked long-tailed dinosaur looking for adventure. Finally they visit their old friend Arnie Argentinosaurus who has gotten too big to ride the Dinosaur Train-until Tiny and Buddy arrange for him to ride on the new flatbed car! Episodes: Remember the Alamosaurus Heck of a Neck An Apatosaurus Adventure Arnie Rides the Flat Car Ned the Quadruped One Big Dinosaur Dinosaur Poop and All Kinds of Families.