Not your father's dinosaurs …

… Book Review: My Beloved Brontosaurus - WSJ.com.

In some cases, new fossils have changed our understanding of dinosaurs, but as much as anything, paleontologists have learned to reinterpret old ones in exciting new ways. Close examination of skeletons, for instance, reveals that dinosaurs suffered from a variety of diseases, including cancer—evidence that cancer is an ancient affliction. Scientists have also become more adept at linking juvenile forms to adults. This has helped them grasp the caterpillar-to-butterfly-like transformation that dinosaurs like the Triceratops underwent as they matured.