While it might be the case that all of the land masses that exist today were once part of a single supercontinent, I seriously doubt that it was the only continent on the Earth at that time. I would be rather surprised if there weren't other continents that were subsequently swallowed up in the subduction zones.
took me a while to get that one ...
See how long it takes you to get this onetook me a while to get that one ...![]()
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