Well... I did some digging. The Great Dying you speak of happened to coincide with an asteroid crater off the coast of Antarctica [0]. I haven't been able to f

Well... I did some digging. The Great Dying you speak of happened to coincide with an asteroid crater off the coast of Antarctica [0]. I haven't been able to find an accurate globe of the continents at that time ([1] doesn't show the poles in great detail), but it does look like eastern Siberia was at the antipode of the Australia/Antarctica boundary. So the theory seems to hold up -- at least from the confines of my armchair, that is. [0] https://www.universetoday.com/8221/huge-asteroid-crater-in-antarctica/ https://www.universetoday.com/8221/huge-asteroid-crater-in-a... [1] https://resize.hswstatic.com/w_907/gif/cretaceous-map.jpg https://resize.hswstatic.com/w_907/gif/cretaceous-map.jpg