The central tenet of the book is that paleontological art often defaults to "overly conservative" depictions that ignore the biological diversity seen in modern animals.
: The authors argue against the common trend of "shrink-wrapping" dinosaurs—depicting them with skin stretched tightly over their bones, often leaving muscle mass and soft tissue entirely absent. All Yesterdays
: The book moves away from clichés of dinosaurs as "perpetually aggressive predators" or "frightened prey," showing them in natural, peaceful states such as sleeping or playing . Structure of the Book The central tenet of the book is that