World Map

Atlantis - Three Major sinkings:

1st. Approx. 23,000 B.C.
2nd. Approx. 14,000 B.C.
3rd. Approx. 9,600 B.C.

Lemuria:

Continental form approx. 3,000,000 years ago.
Final disappearance approx. 10,000 B.C.

Gondwanaland:

Continental form at least 2,000,000 years ago.
Last submergence 50,000 to 100,000 years ago.[*]

[R. B. Stacy-Judd, Atlantis: Mother of Empires, p.174]

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[*] See >Short-term Memory Impairment.