Mr. Pteranodon and Larry miss the last train home while they're collecting red platanoids at the Big Pond.

Will Larry and Mr. Pteranodon stop bickering long enough to figure out a way home, or will they get stranded in the middle of nowhere and miss the family Winter Solstice Celebration?

The whole family takes an adventure on the Dinosaur Train Riverboat.

Grandpa Pteranodon tells Buddy about the legend of Adm. Globidens.

The Pteranodon family swaps nests with a family of pterosaurs, but find they have little room.

Tank searches for a quiet spot.

Mom takes Tiny, Buddy and Don on a day trip, and they meet a Tyrannosaur with a long, thin snout covered with tiny horns.

Mr. Conductor challenges the kids to create games to get a new perspective on nature.

The family takes a trip to Lizard Island.

The Pteranodon family invites the Conductor to stay with them during a hurricane.

Buddy is disappointed when a new kid at the Junior Conductor's Academy is smarter than him.

Buddy and his new friend, Dennis, work together to pass a series of tests.

Crystal and the King organize a benefit concert to prevent over-fishing of the Big Pond.

Crystal gets stage fright when she's getting ready to perform at the concert.

Shiny invites Annie Tyrannosaurus to Pteranodon Terrace for a sleepover, but all Annie wants to do is investigate the "spooky tree" that Don says "comes alive at night." All Shiny wants to do is stay as far away from the tree as possible. Can the kids get to the bottom of the mysterious tree, and figure out if it really comes alive at night?

When Don stumbles across a stick that looks EXACTLY like Old Spinosaurus, he's determined to have the grumpy old dinosaur pose for his sculpture (so he can get the Spinosaurus's features exactly right). But when they arrive at Old Spinosaurus's home, he makes it clear that there's no way he's posing for anything. Can Don convince Old Spinosaurus to pose for his sculpture, or will Don have to come up with another plan?

The Conductor takes the Pteranodon family on a very special journey on a new invention - the Drill Engine Train - in search of the perfect spot for a new Underground Dinosaur Train Station! Don is THRILLED to be venturing into the BIGGEST HOLE THE EARTH HAS EVER KNOWN! Shiny is nervous to be underground, until they meet a new friend (a Mesozoic Mole named NATASHA NECROLESTES), who teaches them all about the different layers of the Earth. Story A Educational Objectives: The Earth has several layers - the crust (a thin, solid outermost layer), the mantle (the deeper, denser layer), and the core (the super dense center that's as hot as the sun). Also, a Necrolestes is a type of Mesozoic mole.

As the Pteranodon Family continues their journey underground, Don accidentally breaks Buddy's trilobite fossil (the oldest fossil in his collection!) When the search for another trilobite fossil turns up empty, their new friend Natasha Necrolestes takes them to Fossil Alley, where the kids learn that the older the fossil, the deeper underground it is. Story B Educational Objectives: You don't usually find fossils from different time periods mixed together in the Earth. The Law of Superposition means that when we see a stack of rock layers, the deeper you go into the Earth, the older the rocks and fossils you find.

The Drill Engine Train burrows into an underground limestone cave, where the Pteranodon Family meets some strange creatures without eyes called "troglobites." In a contest to see who would make the best troglobite, Buddy, Tiny, Shiny, and Don participate in a treasure hunt - with their eyes closed! The kids have to rely on their other senses (with some guidance from the actual troglobites) to navigate the cave and find the prize. Story A Educational Objectives: A speleologist is someone who studies caves. Also, there are creatures called troglobites whose bodies are specially adapted for living in deep caves without any light.

While digging even further underground, the drill bit on the Drill Engine Train breaks. The Pteranodon Family find themselves in the Cave of Giant Crystals, where they learn all about rocks and crystals (what they are, how they're different, how they form). In order to get back home, the Pteranodon Family has to fix the drill bit by finding a mineral harder than the mineral that broke the bit in the first place. Story B Educational Objectives: Minerals form naturally in the Earth and are made of the same thing all the way through, while rocks are made up of a bunch of different kinds of minerals. Minerals come in thousands of different types (more than 4000 to be more exact), many of which form large and beautiful crystals, some of which are harder than others.