Darren Naish has published a book of articles that he wrote for the Tet Zoo blog. Darren writes about four-limbed creatures, which includes fish, lizards, snakes, mammals, and birds. He reports on a lot of original research and explains the evidence for unresolved questions. Check it out! You can find it on Amazon U.S. or Amazon UK.
Hat tip to Dave Hone’s Archosaur Musings.