Nativus Coniunctus 

Because Terrestrial Extras closely resemble modern-day Homo Sapiens, and because they are believed to be the next species of human life on earth, TET researchers have given the Linnaean classification to the family of Hominids, under the Genus and Species Nativus coniunctus.

Linnaean classification:
Kingdom Animalia
Phylum Chordata
Subphylum Vertebrata
Class Mammalia
Subclass Eutheria
Order Primates
Suborder Catarrhini
Family Hominidae
Genus Nativus
Species coniunctus

The etymology of this name is derived from the latin definitions and the belief that Terrestrial Extras are from the Earth and share a collective knowledge or possibly other advanced telepathic methods of communication.

nativus -a -um, born; native, natural; inborn, innate.
coniunctus -a -um, connected, joined, agreeing, allied.

Evolution of man... and into the future:

Evolution of human skulls... and into the future:

We're sure that you can think of many more great questions, as well as come up with explanations of your own, so please feel free to discuss your thoughts in the forums