Andrew, Judy, and Thudd travel in the newly repaired Time-A-Tron to the Ice Age in an effort to rescue Uncle Al, who is stranded somewhere on the frozen tundra, and make it back to the present in time to thwart the evil plans of Doctor Kron-Tox.
Draws from the fossil record to present a region-by-region exploration of North America as it may have looked near the end of the Ice Age, and features computer-generated images of landscapes and now extinct animals such as the wooly mammoth and giant short-faced bear.
Journey through the prehistoric world of dinosaurs, pterosaurs, ichthyosaurs, and plesiosaurs. Features cutaway illustrations which show the skeletons and internal organs.
The bat's earliest ancestors, "chiropters," face great evolutionary changes, lead by the youngest son of the colony leader, Dusk, who is the only one that has the ability to fly and see during the night using his echo vision.
Describes the dinosaurs and other prehistoric reptiles, examines individual species, and explains how paleontologists made the fossil discoveries leading to our current knowledge.