[samtheman]

24 Hours of Chaos: The Day The Moon Was Made

[ThePythonicCow]

That "24 Hours of Chaos" link is to a very different theory than the one I'm describing. That one is a collision theory. What I'm suggesting is a rapidly spinning earth, smaller in diameter, spinning so fast at 65 million years ago that part of the equatorial bulge flies off, and the remaining crust, which had been a single piece (under water except around the equatorial bulge) is spread over the expanding surface of a growing planet, creating the oceans.

It's not a traditional Pandea theory, which has the earth size holding constant, and the continents sliding about, beginning with one connected super-continent. Rather it's more like a slowly exploding egg theory.

Prior to the cataclism at 65 million years, all surface life on the planet would have been on the connected, raised bulge around the equator, resulting in world wide uniformity of land plants and animals. As it got close to 65 million years ago, and the earth spinned faster and faster, the centrifugal force would have counteracted the gravitational attraction of masses, allowing for increasingly large beasts, up to incredibly large dinosaurs shortly before 65 million years ago.