This herbivore had two rows of ridges growing from its backbone along its neck, body and tail. These ridges may have had skin coverings that formed a sail or two.
Amargazaurus walked on four legs, had a small head, a long neck and a very long tail. It had to eat a very large amount of plants every day to sustain itself.
It devoured leaves without chewing and probably had stomach stones to help digest such hard food. Amargazaur had blunt teeth, useful for stripping leaves.