Josh Rosenau sent this to Glenn Branch who sent it to me. What is “this”? It’s The Cartoon Guide to Vertebrate Evolution by artist Albertonykus (real name Albert Chen), an undergraduate student in geology at the University of Maryland. About this amazing creation, he writes on his Deviant Art Gallery page:
In which I discover the pain of drawing non-avemetarsalian archosauriforms (so many osteoderms!) and ungulates.