Aralosaurus was a herbivore that lived in the late Cretaceous period, sometime between 93.5 and 85.8 million years ago. Several relatives, such as Jaxartosaurus have also been found in the surrounding area where Aralosaurus was found.
Aralosaurus was about the size of an elephant. Although very little is known about Aralosaurus (only one near complete skull has been found); it was identified by a beak with nearly 1,000 small teeth in 30 rows. These teeth were used for breaking up plant matter by chewing, a feature common in herbivorous dinosaurs, but unusual for reptiles. The back of an Aralosaurus skull was wide, a feature suggestive of large jaw muscles used to power its chewing apparatus.
The nasal peak before the eyes was common to most hadrosaurs. This bump may have also been used as a weapon in duels between males by head butting into one another, much like modern day animals such as rams and goats. It had a thick tail, bulky body and powerful hind legs, all also common with other hadrosaurs.