44. Jess Hesperornis (2010)
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!
Release date: 2010-04-13
Season number: 1
Episode number: 44
Runtime: 11 minutes
Cast
Rest of the cast - click here to expand
Alexander Matthew Marr - Don (voice), Kathleen Barr - Ned Brachiosaurus (voice)