Mosasaurus

With strong flippers and shark-like teeth, Mosasaurus once ruled the oceans. Reluctant readers discover what life was like for this Cretaceous sea reptile through diagrams, graphs, powerful illustrations, and fun text.

Part of the Dinosaur Discovery series

With large, leathery wings, long necks, and giant, gnashing teeth, dinosaurs and flying reptiles once ruled the earth. Now, they capture the imaginations of readers around the world. Take struggling and reluctant readers on a journey to discover what life was like for these extinct creatures through expertly leveled text, detailed maps, timelines, and other infographics, and action-packed imagery.