Iguanodon or Iguanodon bernissartensis, was an early Cretaceous dinosaur. A massive herbivore with a horny beak and cheek teeth for grinding vegetation.
Maiasaura lived in herds and it raised its young in nesting colonies. The nests in the colonies were packed closely together. The nests were made of earth and contained 30 to 40 eggs laid in a circular or spiral pattern. The eggs were about the size of ostrich eggs.
