On their Space-Time Shuttle tour of the prehistoric world, a brother and sister land in the Jurassic Period where they see the largest and most ferocious land animals that have ever lived.
John Gerald Head Book order




- 1990
- 1990
World of the Reptiles
- 30 pages
- 2 hours of reading
Aboard their Space-Time Shuttle, a brother and sister stop in the Permian Period to see prehistoric reptiles.
- 1990
A brother and sister travel back in time to several epochs in the Cenozoic Era and observe a variety of prehistoric mammals in their natural environment.
- 1990
A brother and sister travel back in time to the late Devonian period where they observe the first amphibians