Weekend Special S07 E07 The Amazing Bunjee Venture (Part 1)

Karen (voiced by Nancy Cartwright) and Andy (voiced by Robbie Lee) are accidentally transported back to the year 100,000,000 B.C. in their father's time machine. Trapped in the Age of Dinosaurs, the kids confront surly cavemen and are also rescued from a pterosaur by a lovable, orange-haired creature with an inflatable trunk named Bunjee (voiced by Frank Welker).