Saichania...

Saichania was an armored herbivore (plant-eater) that lived in the late Cretaceous period around about 80 million years, in what is today southern Mongolia. Saichania's diet is believed to have consisted of tough vegetation - it had a solid hard palate which seems adapted for this purpose. 

Saichania was protected from predators with armor that include bony plates on its back, spikes, and a heavy bony growth on its tail which it swing as a club. The animal was about 23 feet long (7 meters) and weighed about 1 ton. 

It is belived that Saichania lived in a hot, arid, desert-type environment - and it seems to have possessed a number of adaptations to this environment. Saichania's skull was equipped with complex air passages that would have helped it keep cool. Additionally, it may have a salt gland near its nostrils.