Dinosaur Train

Season 1, Episode 44

Episode Title: Jess Hesperornis

Air Date: 2010-04-13

Overview:

The Pteranodons venture to the Big Pond to find out if dinosaurs can live in the water. Their quandaries are quenched when they meet Jess Hesperornis, who turns out to be not only a water-dwelling dinosaur, but a bird as well!