To clarify, I wasn't so much thinking of continents drifting relative to each other, rather something like the Earth's crust slipping on the molten mantle so th

To clarify, I wasn't so much thinking of continents drifting relative to each other, rather something like the Earth's crust slipping on the molten mantle so that the continents all moved together from equator to pole and vice versa. I remember hearing some potential evidence for this (but don't have any links to hand).