The original post: /r/askscience by /u/Sarge_Jneem on 2025-01-16 13:18:16.

I often see an animation that shows all current landmasses relatively neatly stitch back together to form Pangaea. Since Pangaea there has been 2-300M years of erosion effecting coastlines as well as sealevel changes. Seabed fossils from shallow seas are found in central USA, the centre of the UK and in Kazakhstan (to name a few places). If these places were currently underwater the map of Pangaea neatly stitching back together wouldn’t be so tidy. Is it just a quirk of timing that sea-level is at a very similar level to when Pangaea existing?