[imintrouble]

I feel rude even asking this question, but when I read the initial theorem that all humans have evolved from that life form which existed in Africa, I had no problem with the idea posited, but, I wanted to ask further:

Was the continent of Africa as it is now too? Haven't the land masses shaped and reshaped, and shrunk and enlarged to some extent? Perhaps what we now consider Africa was not at its current location in relation to other bodies of land, and perhaps it had an entirely different weather system.

Perhaps all the great land masses were at one time joined and the oceans were smaller then, as I understand it they are currently growing larger, taking land shelf areas and islands under water.

If mankind has evolved greatly, would it not be fair to think that the earth's land masses have also evolved both in size, shape, ecological factors and location geographically?

The only land mass I ever hear discussed is the Alaskan/Russian bridge over which the original Mongolian tribes travelled to become the ancestral race of the indigenous North and South American peoples.

What about all the other continental regions?

I know curiosity killed the cat.

[texasbluebell]

This might be of interest to you re: the continents.

link

"According to the continental drift theory, the supercontinent Pangaea began to break up about 225-200 million years ago, eventually fragmenting into the continents as we know them today."

The link shows various diagrams of the continents splitting off.

[PatrickHenry]

Continental Drift: An Introductory Guide.
Continental Drift.
theory of continental drift.