Dinosaurs in the middle school classroom can be exciting. These extinct reptiles are both an exotic subject and familiar to our students. Because students are inherently interested, dinosaurs can serve as an effective portal for the integration of biology, geology, ecology, and the history and nature of science. The field of dinosaur study is dynamic, and our knowledge of these animals—as well as our images of them—advances with each new discovery. The authors developed the DinoViz project to tap into the rich resources of historic dinosaur images and reveal the progression and nature of science to their students through the evolution of dinosaur illustrations.