The Amazing Michelinoceras Bros. / Dad's Day Out

S1 E37: The family travels deep underwater on the Dinosaur Train to view two backwards-bounding brothers named Max and Mitch Michelinoceras. The kids are delighted to see that Max and Mitch put on a synchronized swimming show. / Buddy, Tiny, and Mr. Pteranodon join Annie Tyrannosaurus and Leroy Lambeosaurus and their dads for a Dads' Day at the Big Pond. It's all fun and games until it starts to rain.