Mosasaurs had two rows of sharp teeth. They easily snapped up prey! In this hi/lo title, readers are introduced to Mosasaurs' body parts, behaviors, and extinction through leveled text and colorful illustrations. Along the way, features map the prehistoric world, highlight favorite foods, compare Mosasaurs' size, and more. The book ends with a two-page profile that puts important information about Mosasaurs in one place!