Her vocal effects were provided by Frank Welker.
Role in the film
Aladar's Mother was shown at the very beginning of the movie and she was an Iguanodon that was taking care of her nest that was filled with eggs, when suddenly a Carnotaurus appeared from the woods and started chasing all of the dinosaurs present. The Iguanodon tried to resist as much as she could with her nest, but the Carnotaurus was coming so fast that she was forced to flee with the others. One dinosaur was killed and many eggs were destroyed. Only one of the eggs survived the attack; this egg was taken by an Oviraptor but eventually dropped it into a river as it was fighting against another one for claim of the egg. The egg was eventually picked up by a Pteranodon as it flies far away to an island and ended up dropping the egg. The baby hatched here and was raised by a lemur family consisting of Plio, Yar, Suri and Zini. Plio is the one who named the baby Aladar.
It is unknown if she was alive by the time Aladar arrived at the herd.