Mamut Lanudo/Woolly Mammoth

by Helen Frost

Published 1 September 2006

Learn about the physical characteristics, the eating habits, and the extinction of the Tyrannosaurus rex.

Alosaurio/Allosaurus

by Helen Frost

Published 1 September 2006


Estegosaurio/Stegosaurus

by Helen Frost

Published 1 September 2006

Triceratops/Triceratops

by Helen Frost

Published 1 September 2006