Scrolled down to make sure someone had mentioned this! Fantastic and professional spotlight on the potential follies and pitfalls of paleontological art. And if you want to do some Lovecraft-level psychic damage to yourself, the same artist from that book has a "speculative evolution" sci fi art book called All Tomorrows in which they envision the multifarious biological forms that humans are forcibly evolved into by a malicious alien race 1 billion years from now. If you've ever read those Scary Stories books by Alvin Schwartz and felt uneasy seeing Stephen Gammell's illustrations, C.M. Kosemen's sketches conjure a similar same vibe.