Xenotaxonomy

Xenotaxonomy is the hierarchical classification of extraterrestrial species. Xenotaxonomy is largely based off the Earthly defunct taxonomy, with the distinction of including abstract evolutionary processes and chronology, and the planets or stars of origin.

Nomenclature
In contrast with the archaic binomial or trinomial nomenclature of Earth, organisms are also named based off the planet they originated from.

Naming is as follows, in italics and in Latin: Planet Genus species. In some cases, such as of the gods, whose origin is undetermined, "Und" (short for undetermined) is used in place for the planet.