What differentiates a reptile from an amphibian? How do these unique creatures defend themselves? How did they evolve? This encyclopedia will answer these and more whats and hows for you. Learning i……続きを見る
A richly illustrated introduction to the spectacular reptiles that swam the oceans when dinosaurs roamed the land
During the Mesozoic era, 252 to 66 million years ago, dinosaurs ruled the land, but ……続きを見る
