The Ovomorph, known colloquially as the Egg, is an incubation chamber that contains a Facehugger. The Ovomorph is generally considered to be the first stage in the life cycle of the Xenomorph species.
- In the novelization of Alien: Covenant, David shows Oram a fossilized Ovomorph and the dead Facehugger within, pointing out that they are an Engineer creation, engineered long before he arrived on the planet. David goes on to express a desire to play God, stating that he wishes to create a similarly "perfect" lifeform himself, apparently inspired by Engineers' past experiments that created first Xenomorphs. This is in strong contradiction to the film, which instead implies David is the originator of the Xenomorph species and creating them without any references from Engineers' past experiments.