Ankylosaurids were like extra-aroured nodosaurids, some of the Ankylosaurinae were
allso double sized, and in Syrmosaurini there occured arour even in the eyelocks.
Another feature in Ankylosauria was the stiff tail, and the bony club in the end of
it. A swing with that tail, could easily snap a tyrannosaurid leg.
Pinacosaurus has been found piled together in tiny groups, possible keeping warm
during a extra cold night, that eventually killed them.
Saichania is known to have lived in herds of several houndred individuals, and a herd of
several houndred individuals of armored tank-o-saurs probably was the defense ever to walk on
earth!