Yesterdays - All

: 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.

: 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 All Yesterdays

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

: To highlight the flaws in traditional paleoart, the authors "reverse-engineer" modern animals. They illustrate how future paleontologists might incorrectly reconstruct modern species like elephants, cats, and swans if they only had their skeletons to work with, resulting in bizarre, unrecognizable creatures. Impact and Legacy All Yesterdays – book review | Dinosaurs - The Guardian : To highlight the flaws in traditional paleoart,

is a seminal 2012 art book that fundamentally changed the landscape of modern paleoart . Written and illustrated by John Conway, C. M. Kosemen, and Darren Naish, the book challenges conventional scientific reconstructions of extinct animals by emphasizing the limits of what fossils can actually tell us. Core Thesis and Philosophy

: Instead of only drawing what the bones explicitly show, the authors use "informed speculation" to suggest plausible soft tissue features—like fat deposits, feathers, and wattles—that do not leave fossilized remains but are common in living relatives.