Alien Species active in Earth's evolution:
ET A-Z Listing compiled from many sources.
There are just over 10,000,000 worlds in this universe with similar humanities to our own, this is but a few races who are or have been involved with our life wave for some reason.
[link to www.bibliotecapleyades.net
One example from the link:ALPHA-DRACONIANS
Reptilian beings who are said to have established colonies in Alpha Draconis (Thuban) - click image right. Like all reptilians, these claim to have originated on Terra thousands of years ago, a fact that they use to ’justify’ their attempt to re-take the earth for their own.
They are apparently a major part of a planned ’invasion’ which is eventually turning from covert infiltration mode to overt invasion mode as the "window of opportunity" (the time span before International human society becomes an interplanetary and interstellar power) slowly begins to close.
They are attempting to keep the "window" open by suppressing advanced technology from the masses, which would lead to eventual Terran colonization of other planets by Earth and an eventual solution to the population, pollution, food and other environmental problems.
Being that Terrans have an inbred "warrior" instinct the Draconians DO NOT want them/us to attain interstellar capabilities and therefore become a threat to their imperialistic agendas (Draconian).