No. Sorry. Nobody outside of conjecture can lay much fact on what happened 1-10 billion years ago. They can't even tell me what happened 10k years ago.

But ok, perhaps the geology has identified more carbon in the ground table, and the poles were different, having vegetation.

It is not an argument for quick let's just melt the poles why don't we. Because according to the conjecture we had a different climate then, so let's change ours, now.

But I have agreed, increased carbon can increase vegetation. Trees thrive on it, giving us oxygen in return. Not quite today, when the planet is producing far more carbon than we do, and it is causing an increase in temperature. It is becoming increasingly problematic because we have populated everywhere and are feeling the effects far more.