List of Aliens in Operation: Alien

Alien species in Operation: Alien.

Mammals

 * Brian Albert's species
 * Hannah Hilton's species
 * Kentavromimus amalgama
 * Cyonmimus siderokoristoma
 * Kolasielafus macrolaimos
 * Homosus fossura

Amphibians

 * Amfivioxifias cheliura
 * Sphyrnacarcharmimus stithostoma

Arthropods

 * Entomokavouri tetrapodus

Reptiles

 * Tromoteras apteros