While I do not agree with everything tabled by H.P.Blavatsky and the Theosophical society,
The theme of different races during the preceeding Ages** of the Earth may hold truth.
How the Genetic forms occured is question.
Themes such as Galactic Panspermia could explain how Hominids appear on a planet after Dinosaurs.
It may be a form of evolution where clocking out of species enables other forms to succeed.
The debate ...that Humans/Hominids are animals of a kind.
We wear animal skins,eat animals...
The 3rd Eye/Pineal gland. ..the Godlike abilities from that.
Blavatsky comments this was from previous Earth Ages and passed on to the next,
Yet decline after Atlantean/MU
We find the ancient civilizations (Richard Cassaro - publish)...teaching/keeping alive the Truth of the 3rd Eye and Global Consciousness in socio.
Today...Giants are nearly extinct (possible remote locations)
It would appear the Genetics clocked out.
The 3rd Eye ability is also a reduction...to the point where certain narcotics are required to access it,..specialized focus techniques.
The Paracas elongated skull race may be the last of the Giants and the 3rd Eye ability.