Ovomorph (Egg)

https://www.cgtrader.com/3d-models/character/sci-fi-character/ovomorph

The Ovomorph,known colloquially as the Egg, is an egg-like capsule containing a Facehugger, generally considered to be the first stage in the life cycle of the species Xenomorph XX121. They are produced and laid by a Queen but can also be produced by the inducement of a process of metamorphosis on a captured victim which then changes into a viable ovomorph.