This egg nest is a composite (made from more than one individual), containing some of the largest theropod dinosaur eggs found to date. Two complete, nearly intact egg nests of this size and type have been excavated in China. This reconstruction was produced using casts of many individual eggs and groups of eggs, collected from the extensive red sandstone beds in the Xixia Basin of Henan Province in east-central China. Notice the 'pairing' of the eggs in the nest. This 'pairing' suggests that these dinosaurs had paired oviducts, laying two eggs at a time, and all their eggs in one sitting. This nest is of the size and appearance that Tyrannosaurus rex may have laid.