Evolutionary Ages

DESCENDING

Golden Age
11,500 B.C. to 6,700 B.C.
lasts 4,800 years
Satya Yuga, advanced mentally and spiritually, 100% brain capacity (Lemuria)

Silver Age
6,700 B.C. to 3,100 B.C.
lasts 3,600 years
Treta Yuga, not as advanced but still high intellect achievements, 75% brain capacity (Atlantis)

Bronze Age
3,100 B.C. to 700 B.C.
lasts 2,400 years
Dwapara Yuga, inventive but more materialistic, 50% brain capacity (Egypt and India)

Iron Age
700 B.C. to 500 A.D.
lasts 1,200 years
Kali Yuga, humankind at its lowest ebb mentally and spiritually, 25% brain capacity (Messiahs)

ASCENDING

Iron Age
500 A.D. to 1,700 A.D.
lasts 1,200 years
Kali Yuga, humankind still at low ebb, slow improvements, 25% brain capacity

Bronze Age
1,700 A.D. to 4,100 A.D.
lasts 2,400 years
Dwapara Yuga, understanding different form of energy, technology, interplanetary travel, 50% brain capacity

Silver Age
4,100 A.D. to 7,700 A.D.
lasts 3,600 years
Treta Yuga, humankind as a whole develops telepathy/mental power, 75% brain capacity

Golden Age
7,700 A.D. to 12,500 A.D.
lasts 4,800 years
Satya Yuga, technology is superfluous as mental/spiritual power fully manifested, 100% brain capacity