Grandma and Grandpa Pteranodon are the grand parents to Buddy, Tiny, Shiny and Don. They are the parents of Mr. Pteranodon. They know Mrs. Conductor when she was running the train and Mr. Conductor when he was a child. They had the first Fishwich on the Dinosaur Train when the dining car opened. Grandma and Grandpa Pteranodon originally lived at Pteranodon Terrace, but sometime in they left and moved to Pteranodon Trail Station on the Eastern Continent of Appalachia.