All dinosaurs above now have correct HD according to Alex’s formula here:
http://www.autarch.co/forums/ask-autarchs/dinosaur-hit-dice
Good stuff.
A lot of those weird, innumerable “clawed lizardy” monsters from later editions are making a lot more sense now that you’re casting them as magically-experimented upon dinosaurs. I’d never have made that connection.
Thanks!
Added a note to the Ankylosaurus entry about its use as a massive beast of burden in my setting.