Pangaea was the most recent supercontinent. The one before that was called Pannotia. The one before that was called Rodinia, the one before that was called Columbia.
Be careful of that bear story. Pangaea started breaking up some 200 Million years ago (notation, Ma). While the ancestors of mammals were present at that time, they had not evolved to the point where any identifiable predecessor of bears can be identified.
Bear ancestors descended from dog-like ancestors fairly recently, some 25 - 30 Ma, LONG after Pangaea had split up into what were to become our present-day continents.
Pangaea, yes. Lets use a the bear species as an example. All bears are descended from a common ancestor that probably existed on this one continent. When the continent separated and this common ancestor was broken up into various geographical locations it began to evolve into different bear types over the years. Over millions/billions of years they adapted to their respective environments. Its why polar bears live where they do and look the way they do. It's why black bears live where they do and look the way they do. All bears are perfectly adapted to their geographical locations. Move one to another's location and it wouldn't survive long.
It's either that or some drunk built a big boat and dropped all the bears off on each continent with magic...
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Pangaea was the most recent supercontinent. The one before that was called Pannotia. The one before that was called Rodinia, the one before that was called Columbia.
Be careful of that bear story. Pangaea started breaking up some 200 Million years ago (notation, Ma). While the ancestors of mammals were present at that time, they had not evolved to the point where any identifiable predecessor of bears can be identified.
Bear ancestors descended from dog-like ancestors fairly recently, some 25 - 30 Ma, LONG after Pangaea had split up into what were to become our present-day continents.
Pangaea, yes. Lets use a the bear species as an example. All bears are descended from a common ancestor that probably existed on this one continent. When the continent separated and this common ancestor was broken up into various geographical locations it began to evolve into different bear types over the years. Over millions/billions of years they adapted to their respective environments. Its why polar bears live where they do and look the way they do. It's why black bears live where they do and look the way they do. All bears are perfectly adapted to their geographical locations. Move one to another's location and it wouldn't survive long.
It's either that or some drunk built a big boat and dropped all the bears off on each continent with magic...
Joseph - you just repeated what I said :)
Pangaea? http://en.wikipedia.org/wiki/Pangaea
Maybe. No one really knows.
This theory comes from piecing the continents together into one large puzzle.
If this theory is correct then eventually the Atlantic rift will push the continents back together on the other side of the globe.
Yes and it happened at least 3 times.
Broke up, and recombined.
Pangaea is what they called the last one.
Never heard of Pangaea?
Yeah it was pangea, they have constantly been pushed together and broken apart by plate tectonic action
Yeah, it was called Pangaea.
And?
You failed to add the detail that might make your statement a question.
Or if you think it is a question - then "True"
Is there a question in there, someplace?
.