Sometimes they dig up some standard thunder lizards, sometimes they dig up some that are just plain cool. That's the case with the Caiuajara dobruskii. This guy looks so cool that there are two things that you can count on:
1) all the other dinosaurs of his era looked up at him and said "that dude is just plain cool".
2) you'll see him appear in some future monster book for Castles & Crusades