Human

"'Well all Terran's are Human not all Humans are Terran' -Imperial Scholar"

Humans are a group of bipedal mammals native to the planet Terra that represents two sub-species who diverged from one another around approximately 763 Dominion (108,000 B.C.E.).

Homo Sapiens Terra
Homo Sapiens Terra, commonly called Terrans, are a branch of humans who continued to evolve on the species homeworld after 763 Dominion (108,000 B.C.E.) and are representative of a natural evolution of the species.

Homo Sapiens Galactica
Homo Sapiens Galactica, simply called Humans, are a branch of humans who were removed from their homeworld around 763 Dominion (108,000 B.C.E.) and have evolved as a part of the galactic community and as such share little beyond their appearance with the Terran cousins.