WHAT'S INSIDE: EXTINCT ANIMALS
- Extinct Birds
- Prehistoric Animals
- Other Extinct Animals
OK, hop in your time machine and go back 67 million years or so to the Cretaceous period. Then find a Tyrannosaurus rex and challenge it to a race. Sounds crazy, huh? Actually, the race results may surprise you.
Bactrosaurus ("reptile from Bactria") is known from many skull and skeletal pieces, but not a complete skeleton. Learn more about the Bactrosaurus and other Late Cretaceous dinosaurs.